Turkish Court System Explained: A Guide for Foreigners

Summary

This comprehensive legal guide explains the Turkish court system hierarchy for foreigners and international businesses. Understand civil, criminal, and administrative courts, the appellate process, and the roles of the Court of Cassation and Council of State. Navigate Turkish litigation with confidence. — detailed analysis

Legal review: 20 October 2026. Original publication date preserved. General information; the proceeding, decision date and applicable remedy require individual assessment.

Table of Contents

• I. Introduction

• II. Overview of the Turkish Judicial System

• III. The Principle of Separation of Powers and Court Independence

• IV. General Court Structure and Hierarchy

• V. First Instance Courts (İlk Derece Mahkemeleri)

• VI. Regional Courts of Appeal (Bölge Mahkemeleri)

• VII. The Supreme Courts (Yüksek Mahkemeler)

• VIII. The Administrative Jurisdiction (İdari Yargı)

• IX. The Civil Jurisdiction (Adli Yargı - Hukuk)

• X. The Criminal Jurisdiction (Adli Yargı - Ceza)

• XI. Constitutional Jurisdiction and Individual Application

• XII. Legal Representation for Foreign Nationals

• XIII. Court Fees and Litigation Costs

• XIV. Alternative Dispute Resolution (ADR)

• XV. Conclusion

I. Introduction

Navigating a foreign legal framework is a complex endeavor for expatriates, multinational corporations, and international investors. The Republic of Turkey operates under a civil law system, heavily influenced by continental European legal traditions, particularly those of Switzerland, Germany, and France. For foreign nationals engaging in commercial activities, purchasing real estate, or residing in Turkey, understanding the Turkish court system hierarchy legal guide is an essential step in risk management and legal compliance.

The Turkish judicial system is comprehensive and multi-layered, designed to address various types of disputes through specialized branches of jurisdiction. Unlike common law systems where courts of general jurisdiction handle a wide array of cases, the Turkish system features distinct jurisdictional branches, most notably the civil (adli) and administrative (idari) branches. Each branch has its own first instance courts, regional appellate courts, and a dedicated supreme court.

This article provides an in-depth examination of the Turkish court system, breaking down its structural hierarchy, jurisdictional divisions, and procedural nuances. It is tailored to assist foreign individuals and entities in understanding how disputes are adjudicated, how the appellate processes function, and what specific legal requirements apply to non-citizens participating in Turkish litigation.

Key Point: The Turkish legal system is fundamentally divided into civil/criminal jurisdiction (Adli Yargı) and administrative jurisdiction (İdari Yargı). Understanding this division is the first step in determining which court holds the authority to hear a specific dispute.

II. Overview of the Turkish Judicial System

The Constitution No. 2709 establishes independent and impartial judicial power. Statutes, international agreements, presidential decrees and subordinate regulations operate under their respective constitutional rules. Article 104 limits the subjects and effect of presidential decrees and gives statutes priority where their provisions differ. These instruments should not be treated as interchangeable sources of authority.

Supreme-court case law is an important interpretative source, but its legal effect depends on the decision type and governing statute. Binding unification judgments and the constitutional effect of Constitutional Court decisions differ from an ordinary chamber decision. Whether an earlier ruling governs a later case must be assessed with its subject and procedural context.

Furthermore, Turkey is a party to numerous international treaties, which, according to Article 90 of the Constitution, carry the force of law. In the context of fundamental rights and freedoms, international agreements take precedence over domestic statutes in cases of conflict. This constitutional provision provides an additional layer of legal protection for foreign investors and individuals residing in the country.

III. The Principle of Separation of Powers and Court Independence

The principle of the separation of powers is a cornerstone of the Turkish constitutional order. The legislative power is vested in the parliament, the executive power is held by the President of the Republic, and the judicial power is entrusted to independent courts. The independence of the judiciary is safeguarded by constitutional provisions which state that no organ, authority, office, or individual may give orders or instructions to courts or judges relating to the exercise of judicial power.

Judges and public prosecutors are governed by the Council of Judges and Prosecutors (Hakimler ve Savcılar Kurulu - HSK). This constitutional body is responsible for the admission of judges and prosecutors into the profession, their appointments, transfers, promotions, and disciplinary matters. The existence and functioning of the HSK are designed to insulate judicial officers from undue executive or legislative influence.

For a foreign entity involved in litigation, the constitutional assurance of judicial independence is critical. It establishes a framework wherein legal disputes, whether between private parties or against the state apparatus, are adjudicated based strictly on statutory law and objective legal principles.

IV. General Court Structure and Hierarchy

The principal branches are distinct. The Court of Jurisdictional Disputes resolves the specified conflicts between judicial and administrative jurisdictions; the Constitutional Court performs its own constitutional functions. An individual application is not a general additional appeal from either branch. The principal structures are:

• Civil and Criminal Jurisdiction (Adli Yargı): Handles general private law disputes, commercial matters, family law, and criminal offenses.

• Administrative jurisdiction: principally public-law administrative acts, actions and specified administrative contracts. Not every dispute involving a public entity belongs here; private-law dealings and valid statutory or arbitration exceptions require separate assessment.

• Constitutional Jurisdiction (Anayasa Yargısı): Reviews the constitutionality of laws and hears individual applications regarding human rights violations.

• Jurisdictional Disputes (Uyuşmazlık Yargısı): Resolves conflicts of duty and judgments among the different branches of jurisdiction.

Ordinary appeal and cassation commonly form a three-stage structure, with regional appellate review operating in its modern form since 2016. It is not universal: some decisions are final at first instance or regional appeal, some special procedures have a different route, and specified cases begin before a high court. The governing procedure, decision date and transitional rules determine the available remedy.

V. First Instance Courts (İlk Derece Mahkemeleri)

First Instance Courts constitute the foundational level of the Turkish court system hierarchy legal guide. These courts are where lawsuits are initially filed, evidence is collected, witnesses are heard, and the initial judgments are rendered. They are distributed throughout the country in districts and provinces to ensure access to justice.

The proceedings at this level involve the comprehensive examination of both the material facts of the case and the applicable law. In civil proceedings governed by the Code of Civil Procedure No. 6100 (Hukuk Muhakemeleri Kanunu), the process typically includes a preliminary examination, an investigation phase (evidence gathering), oral arguments, and the final decision.

In criminal proceedings, governed by the Code of Criminal Procedure No. 5271 (Ceza Muhakemesi Kanunu), the First Instance Courts hear the charges brought forward by the public prosecutor, examine the evidence presented by both the prosecution and the defense, and render verdicts of acquittal, conviction, or other appropriate legal outcomes.

Important: Timelines for filing responses, submitting evidence, and appealing decisions in First Instance Courts are strictly regulated by procedural laws. Missing a statutory deadline frequently results in the forfeiture of legal rights.

VI. Regional Courts of Appeal (Bölge Mahkemeleri)

The introduction of the Regional Courts of Appeal (İstinaf Mahkemeleri) in 2016 marked a significant modernization of the Turkish judicial system. Prior to their establishment, appeals went directly from the First Instance Courts to the Supreme Courts, causing immense backlogs and delays at the apex level.

Regional civil, criminal and administrative appellate functions are governed by their respective procedure statutes. They can involve factual and legal review, but grounds, scope and powers differ. For example, Code of Civil Procedure Article 355 generally confines civil review to the stated appeal grounds while reserving public-policy issues. Regional appeal is not an unrestricted retrial of every issue in every case.

If a Regional Court of Appeal finds that the lower court's decision was incorrect due to a misapplication of law or an incomplete evaluation of facts, it has the authority to overturn the decision and render a new judgment itself, or in certain procedurally flawed circumstances, remit the case back to the First Instance Court. Not all decisions are subject to this appeal; claims below a certain monetary threshold, which is updated annually, are finalized at the first instance level.

VII. The Supreme Courts (Yüksek Mahkemeler)

The Supreme Courts form the highest echelon of the judicial hierarchy. Their primary function is not to re-examine the factual evidence of a case, but rather to ensure the uniform interpretation and correct application of the law across the entire country. The "temyiz" (cassation) review is strictly a review of legal compliance.

A. The Court of Cassation (Yargıtay)

The Court of Cassation is the court of last resort for decisions rendered by civil and criminal courts. It is divided into numerous specialized civil and criminal chambers. When an appeal reaches the Court of Cassation, the relevant chamber examines whether the lower courts applied the statutory rules correctly and adhered to procedural requirements. If a violation is found, the decision is reversed (bozma) and typically sent back to the lower court for a new decision conforming to the Supreme Court's jurisprudence.

B. The Council of State (Danıştay)

The Council of State reviews those administrative judgments for which cassation is available and hears specified cases at first instance. Constitution Article 155 also gives it the duty to express an opinion on public-service concession terms and contracts within two months. Its judicial and advisory functions have distinct legal bases; there is no universal constitutional review of all draft legislation by the Council of State.

VIII. The Administrative Jurisdiction (İdari Yargı)

Administrative jurisdiction is a specialized branch dedicated to resolving disputes between private individuals or entities and the state or public bodies. Given the extensive regulatory role of the state in commercial activities, zoning, licensing, and taxation, foreign investors frequently interact with this branch of the judiciary.

The First Instance Courts in this branch are the Administrative Courts (İdare Mahkemeleri) and Tax Courts (Vergi Mahkemeleri). Administrative Courts hear annulment actions (iptal davası) seeking the cancellation of unlawful administrative acts, and full remedy actions (tam yargı davası) seeking compensation for damages caused by the administration. Tax Courts specifically handle disputes arising from tax assessments, penalties, and customs duties.

Administrative proceedings principally use a written procedure under Law No. 2577. Article 17 distinguishes requested hearings in the specified categories from a court’s power to hold a hearing of its own motion, including the different rules at appeal stages. A hearing is not universally dependent on both a party request and an additional finding that it is necessary. The applicable category and current monetary threshold must be checked.

IX. The Civil Jurisdiction (Adli Yargı - Hukuk)

Asliye Hukuk is generally competent for private-law disputes not assigned elsewhere, irrespective of value under Code of Civil Procedure Article 2. Sulh Hukuk has the particular statutory competence in Article 4, including specified rental, partition and possessory disputes. These two courts are not interchangeable general courts for every case outside a specialist court.

Specialized civil courts are of particular importance to international businesses and individuals. These include:

• Commercial Courts (Asliye Ticaret Mahkemeleri): Adjudicate disputes arising from commercial transactions, company law, negotiable instruments, and bankruptcy proceedings.

• Intellectual-property courts hear the industrial-property and copyright matters assigned to them by statute; general unfair-competition claims require a separate competence assessment.

• Labor Courts (İş Mahkemeleri): Resolve disputes between employers and employees, including claims for severance pay (kıdem tazminatı) and reinstatement to work.

• Family Courts (Aile Mahkemeleri): Handle divorce, alimony, child custody, and division of matrimonial property under Family Law.

• Consumer Courts (Tüketici Mahkemeleri): Address disputes between consumers and commercial providers of goods or services.

The specialization ensures that judges possess the necessary domain expertise to adjudicate complex commercial, intellectual, or employment-related conflicts effectively.

X. The Criminal Jurisdiction (Adli Yargı - Ceza)

Criminal jurisdiction operates under the adli yargı branch and is tasked with determining the guilt or innocence of individuals accused of committing offenses defined in the Turkish Criminal Code No. 5237 (Türk Ceza Kanunu) and other specialized penal statutes.

The criminal court structure is primarily divided based on the severity of the potential penalty:

• Assize Courts sit with a presiding judge and two members and hear the matters assigned by Article 12 of Law No. 5235 or special legislation, including specified offences and the statutory serious-penalty categories. Law No. 7571 removed aggravated fraud under Criminal Code Article 158 from Article 12’s express list with effect from 25 December 2025. Temporary Article 7 preserves the earlier competence rules for qualifying cases already before assize courts or on appeal at commencement; those files must not be transferred merely because of the amendment. The current list, other charges and transitional status must be checked.

• Criminal Courts of First Instance (Asliye Ceza Mahkemeleri): Presided over by a single judge, these courts handle all criminal cases that do not fall under the specific jurisdiction of the Assize Courts or other specialized penal tribunals.

Interpreter rights turn on the person’s ability to understand and express themselves in Turkish and the applicable procedural rule, rather than foreign nationality alone. Code of Criminal Procedure Article 202 provides the relevant interpretation safeguards. Under Article 150, a suspect or accused unable to choose counsel receives appointed counsel on request; the specified mandatory-defence cases require appointment without a request. Representation cost and repayment rules must be assessed separately rather than promising that every appointed lawyer is cost-free in all circumstances.

XI. Constitutional Jurisdiction and Individual Application

The Constitutional Court (Anayasa Mahkemesi) is the highest constitutional organ in the Republic of Turkey. Its primary mandate is to review the constitutionality of laws, presidential decrees, and the rules of procedure of the Grand National Assembly. It also acts as the Supreme Criminal Court (Yüce Divan) to try high-ranking state officials for offenses related to their duties.

The 2010 constitutional amendment introduced individual application, and the Constitutional Court began examining the qualifying violations within its temporal jurisdiction from 23 September 2012. The protected right must fall within the common scope of the Constitution and the European Convention or a protocol binding on Türkiye. Current and personal direct impact is required; this is not an abstract challenge available to every individual or company.

Available, effective and appropriate domestic remedies must first be exhausted. This does not mean that every case must pass through every appellate court, or that unavailable remedies must be pursued. The ordinary individual-application period is 30 days after exhaustion or, if no remedy is provided, after learning of the violation, subject to the statutory excuse rules. Public legal entities cannot apply; private legal entities can invoke rights belonging to the entity, and foreigners cannot invoke rights reserved solely to Turkish citizens. Individual application is a rights remedy, not a general retrial of facts or domestic law.

XII. Legal Representation for Foreign Nationals

Participating in litigation within the Turkish court system involves specific procedural requirements, particularly for foreign individuals and legal entities. While individuals generally have the right to represent themselves in civil litigation, the complexity of procedural law strongly necessitates the engagement of a qualified attorney registered with a Turkish Bar Association.

A. Power of Attorney (Vekaletname)

A representative’s authority and any required special powers must be documented. A foreign-issued power of attorney needs authentication and translation appropriate to the issuing state, applicable treaty and Turkish procedure. Apostille is one route where the Hague Convention applies; a treaty exemption or consular legalisation route may instead be relevant. Where available, execution before a Turkish consulate follows its own requirements. A foreign notary plus apostille is not the only valid route for every applicant.

B. Security Deposit (Teminat)

MÖHUK Article 48 generally requires foreign natural and legal persons bringing proceedings, intervening or initiating enforcement to provide security for costs and the opponent’s loss. Reciprocity requires exemption where established under the applicable rule; treaty, statutory or factual reciprocity must be assessed rather than assumed from geographic region. The court fixes the appropriate security and considers the actual exemption basis; foreign nationality does not establish one fixed percentage.

XIII. Court Fees and Litigation Costs

Accessing the Turkish court system entails the payment of specific judicial fees and expenses, which are regulated by the Law on Fees No. 492 (Harçlar Kanunu). Understanding these costs is essential for an accurate legal budget.

Court fees are generally categorized into fixed fees (maktu harç) and proportional fees (nispi harç). Fixed fees apply to cases where the subject matter cannot be quantified in monetary terms, such as certain family law disputes or administrative annulment actions. Proportional fees are calculated as a percentage of the monetary value of the claim in commercial or debt recovery disputes.

In civil proceedings, the expense advance under Article 120 and the separate evidence advance under Article 324 must be distinguished. The ordinary initial expense advance does not automatically include every future expert or inspection expense. The court’s direction, deadline and consequence depend on the type of advance. Litigation costs are ordinarily allocated against the losing party, subject to exceptions and partial-success rules. A court-awarded tariff lawyer fee differs from the lawyer’s contractual fee and does not necessarily reimburse it in full.

Key Point: The official attorney fee awarded to the winning party by the court is separate from the professional fee agreed upon between the client and their legal counsel.

XIV. Alternative Dispute Resolution (ADR)

To alleviate the burden on the formal court system and provide faster, more cost-effective solutions, Turkish law heavily incorporates Alternative Dispute Resolution (ADR) mechanisms, notably mediation (arabuluculuk) and arbitration (tahkim).

Pre-action mediation applies only to claims within the relevant statute and its exceptions. It requires an attempt, not an obligation to settle. Examples include:

• Employment receivables, compensation and reinstatement within Law No. 7036, subject to its specified work-accident and occupational-disease exceptions.

• Commercial claims within Commercial Code Article 5/A, including the specified monetary receivable, compensation, annulment-of-objection, negative-declaration and restitution actions; not every commercial dispute is covered.

• Consumer-court disputes within Consumer Law Article 73/A, with exceptions including disputes within consumer arbitration-committee competence, objections to committee decisions and the other statutory categories.

• Specified rental disputes (excluding the prescribed non-judgment enforcement eviction route), partition and dissolution of co-ownership, Condominium Law disputes and neighbour-right disputes under Mediation Law Article 18/B, effective since 1 September 2023.

A mediation settlement’s enforceability depends on the statute, subject matter and signatures; some require an enforceability endorsement while specified co-signed instruments do not. Special approval and registration conditions apply to certain property settlements. A failed mandatory mediation requires the prescribed final-record procedure in the subsequent lawsuit. International arbitration is a separate consensual dispute-resolution route for arbitrable matters, subject to a valid agreement and the applicable national or treaty regime; it is not an appeal from a Turkish judgment.

XV. Conclusion

The Turkish court system hierarchy legal guide reveals a sophisticated, multi-tiered framework designed to manage a vast array of legal disputes through specialization and comprehensive appellate review. For foreign investors and residents, recognizing the structural and procedural characteristics of this system is indispensable for protecting their rights and navigating legal challenges efficiently.

1. The system is divided into civil/criminal, administrative, and constitutional jurisdictions.

2. A three-tier structure governs most disputes: First Instance Courts, Regional Courts of Appeal, and Supreme Courts.

3. Foreign litigants must check representation authority, the correct authentication and translation route and any Article 48 security exemption, with the relevant treaty and reciprocity conditions.

4. Alternative Dispute Resolution, particularly mandatory mediation, is an unavoidable preliminary step in many commercial and labor disputes.

5. Given the strict procedural deadlines and specialized court structures, engaging experienced legal counsel is critical.

Foreign entities operating in Turkey benefit from a judicial framework that respects constitutional rights and integrates international legal standards, provided they operate with a clear understanding of its procedural mandates.

This article is for informational purposes only and does not constitute legal advice. For specific legal matters, it is recommended to consult a qualified attorney. The information contained herein is based on the legislation in force as of the publication date and may become outdated due to legislative changes.

Official sources and related reading

• Constitution of Türkiye, Articles 90, 104, 138, 148, 153–155

• Constitutional Court Law No. 6216, Articles 45–49

• Constitutional Court: Internal Rules, Article 64

• Law No. 5235, including temporary Article 7

• HSK decision No. 2275 of 25 December 2025

• Code of Civil Procedure No. 6100

• Code of Criminal Procedure No. 5271

• Administrative Procedure Law No. 2577

• MÖHUK No. 5718

• Mediation Law No. 6325

• European Convention on Human Rights, Articles 34–35

Legal review: 20 October 2026. Original publication date preserved. General information; the proceeding, decision date and applicable remedy require individual assessment.

General information only; not a substitute for advice on the particular facts.