Develioglu & Dag, recognized as one of the oldest premier law firms in Turkey, was established in 1953. Since its establishment, the firm has been dedicated to providing a comprehensive range of legal services to elite corporate clients across various sectors. 

Our firm offers legal consultancy and guidance to both domestic and international clients, specializing mainly in areas such as Corporate Law, Banking and Finance Law, Capital Markets Law, Data Protection Law, Blockchain and Crypto Currency Law, Anti Damping Law, Competition Law, Privatization Law, Contract Law, Telecommunications Law, Tax Law, Labour and Social Security Law, Insolvency and Bankruptcy Law and Project Financing. 

Our firm offers comprehensive legal services by German, English and French speaking attorneys. In addition to employing attorneys registered with foreign Bar Associations, our firm has a longstanding collaboration on various projects with numerous international law firms. 

Our objective at Develioglu & Dag is not to become the largest law firm in Turkey in terms of the number of attorneys. Rather, we aspire to be the law firm of choice for clients seeking the highest quality legal guidance available. 

Our focus is on building lasting relationships with our clients, understanding their unique needs, and providing tailored solutions that drive their success. We believe that true excellence in legal services is achieved through dedication, expertise, and a commitment to our clients’ best interests.

About Develioglu & Dag

Founded in 1953

14 people in their team


Practice areas
Business
Lawsuits & Disputes
Media, Technology and Telecoms
Bankruptcy & Debt
Employment & Labor
Intellectual Property
Real Estate

Languages spoken
English
German
French
Turkish

Social media

review star review star review star review star review star

Practice areas

Business

At Develioglu & Dag, we provide integrated legal services at the intersection of corporate and financial law, advising clients on structuring, managing, and financing their businesses in compliance with Turkish and international legal frameworks. Our combined practice offers seamless support for both day-to-day corporate operations and complex financial transactions.

We represent domestic and international companies in share transfers, mergers, acquisitions, corporate restructurings, and joint ventures—often with a financing component involving secured lending, project finance, or syndicated loans. Our team drafts and negotiates shareholders' agreements, financing contracts, collateral structures, and related corporate governance documents, ensuring alignment between commercial objectives and regulatory requirements.

In the financial sector, we advise borrowers, lenders, and investors on regulatory compliance, cross-border lending, capital markets, and debt restructuring. We have a strong track record in assisting clients before the Banking Regulation and Supervision Agency (BDDK) and other regulatory bodies.

By combining our deep knowledge of company law with technical finance capabilities, we are well-positioned to support complex transactions that require both legal precision and commercial insight. Our sector-specific experience—particularly in fintech, energy, and industrial manufacturing—allows us to deliver tailored solutions that address both operational and financial needs.

Accounting & Auditing
Administrative
Admiralty & Maritime
Agriculture
Antitrust
Aviation
Banking & Finance
Business Registration
Communications & Media Law
Contract
Due Diligence
Employer
Environment
Franchising
Gaming
Government Contract
Health Care
Investment
International
Legal Document
Licensing
Merger & Acquisition
New Business Formation
Office Solutions
Oil, Gas & Energy
Securities
Tax
Transportation
Venture Capital
Nonprofit & Charitable Organizations
International Trade Law
Government Relations & Lobbying
Financial Services Regulation
Tax Increment Financing
Board of Investment (BOI)

Lawsuits & Disputes

Develioglu & Dag represents local and international clients in a wide range of litigation and enforcement matters, with a particular focus on complex commercial disputes, debt recovery, and bankruptcy procedures. Our team provides strategic legal representation at every stage of contentious matters—from pre-dispute negotiations and mediation to trial and appellate litigation.

We have extensive experience handling commercial litigation, including contractual disputes, shareholder conflicts, product liability, and unfair competition cases. Our litigation team is recognized for its tailored, result-oriented approach and deep understanding of the sectors in which our clients operate.

In enforcement and debt recovery matters, we support creditors in executing judgments, securing assets, and initiating compulsory collection procedures. We also represent clients in bankruptcy proceedings, creditor committees, and restructuring processes, ensuring their rights are protected throughout insolvency procedures.

A distinctive feature of our litigation practice is our proactive involvement in pre-litigation alternative dispute resolution. We frequently resolve matters through successful mediation or direct negotiations, minimizing costs and reputational risk for our clients.

Our recent track record includes achieving a high success rate in labor litigation for leading industrial clients, defending against mass insurance recourse claims, and winning unfair competition cases involving IP and trade secret violations.

ADR Mediation & Arbitration
Litigation
Appeal
Ethics and Professional Responsibility
Class Action

Media, Technology and Telecoms

Develioglu & Dag provides integrated legal services at the intersection of telecommunications and data protection law, advising telecom operators, tech companies, cloud service providers, and digital platforms operating in Turkey’s regulated market.

In the field of telecommunications, we assist clients with ICTA licensing, frequency allocation, interconnection, infrastructure sharing, compliance with network security regulations, and contractual matters such as SLAs, roaming agreements, and MVNO arrangements. Our team also represents clients in regulatory audits, administrative disputes, and legal challenges involving unfair practices or consumer protection issues.

In data protection and privacy, we support businesses in aligning with Turkish data protection law (KVKK) and GDPR-equivalent standards. This includes drafting and implementing privacy policies, data processing agreements, and employee data protocols. We also advise on cross-border data transfers, explicit consent management, and responding to personal data breach incidents or inspections by the Turkish Data Protection Authority.

Advertising and Marketing
Biotechnology
Cyber Law, Data Privacy and Data Protection
E-commerce & Internet Law
Fintech
Information Technology
Media and Entertainment
Outsourcing
Space Law
Sports Law
Technology Transactions
Telecommunications and Broadcast

Bankruptcy & Debt

At Develioglu & Dag, our Financial Restructuring practice provides comprehensive legal and strategic solutions to businesses navigating financial distress, liquidity challenges, or complex debt obligations. Financial restructuring is a critical process for companies seeking to stabilize their operations, avoid insolvency, and achieve long-term sustainability through the renegotiation of liabilities, optimization of capital structures, and strategic asset realignment.

Our expertise encompasses debt restructuring, where we assist clients in negotiating with creditors for maturity extensions, interest rate reductions, or principal forgiveness, while ensuring compliance with Turkish insolvency laws, including the Execution and Bankruptcy Law (İİK) and specialized mechanisms such as composition agreements (concordatum). We also advise on operational and business model restructuring, conducting in-depth financial analyses to improve cash flow management, balance sheet health, and profitability. This may involve asset divestments, mergers and acquisitions (M&A), or joint venture restructuring to enhance viability.

In contentious scenarios, our team represents clients in dispute resolution, including litigation and arbitration, to protect their interests in creditor negotiations or insolvency proceedings. Additionally, we ensure regulatory alignment with BDDK (Banking Regulation and Supervision Agency), SPK (Capital Markets Board), and TCMB (Central Bank of the Republic of Turkey) frameworks, particularly for cross-border transactions involving international investors and double taxation treaties.

Financial restructuring demands a multidisciplinary approach, blending legal acumen with financial strategy. Develioğlu & Dag delivers end-to-end advisory services—from risk assessment and contract restructuring to litigation support—helping businesses emerge stronger in volatile economic climates.

Bankruptcy
Credit Repair
Creditor
Debt & Collection

Employment & Labor

Develioglu & Dag offers comprehensive legal support across the full spectrum of employment and social security law, representing both domestic and multinational employers in all aspects of the employer-employee relationship.

We assist our clients in structuring compliant employment frameworks, drafting and negotiating individual and collective employment contracts, and developing workplace policies tailored to their industry-specific needs. Our team also provides strategic guidance on employee discipline, termination procedures, mass layoffs, and internal investigations—always with a view to minimizing litigation risk.

In the area of social security law, we advise on contributions, regulatory compliance, and disputes arising from occupational accidents, disability claims, and employment status classifications. Our lawyers regularly represent clients before the Turkish Labour Courts and the Social Security Institution (SGK).

We have notable expertise in managing the mediation phase of employment disputes—an essential step in Turkey’s legal process. Our recent track record includes successfully conducting over 80 mediations in a single year, achieving amicable settlements in most cases and significantly reducing our clients' exposure to litigation.

Our employment law practice is particularly active in industries with complex labour dynamics, such as manufacturing, logistics, and energy, where we provide sector-specific, strategic counsel for both day-to-day HR issues and major employment disputes.

Employment Rights
Hiring & Firing
Job Discrimination
Labor Law
Pension
Retirement
Sexual Harassment
Social Security
Wage & Hour
Wrongful Termination
Whistleblower & Qui Tam
Employment Benefits & Executive Compensation

Intellectual Property

At Develioglu & Dag, our Intellectual Property (IP) practice provides comprehensive legal services for the protection, enforcement, and commercialization of intangible assets, including trademarks, patents, designs, copyrights, and trade secrets. We advise local and international clients across a wide range of sectors on both contentious and non-contentious IP matters.

Our team offers strategic legal support in the registration and prosecution of IP rights, portfolio management, licensing arrangements, and due diligence in corporate transactions. In contentious cases, we represent clients in infringement claims, unfair competition disputes, domain name conflicts, and cancellation and opposition proceedings before Turkish civil and administrative courts, as well as the Turkish Patent and Trademark Office.

We also handle complex litigation arising from misuse of confidential information, employee breaches of IP obligations, and parallel importation issues. Our deep understanding of both local and cross-border IP enforcement mechanisms allows us to act swiftly and effectively to protect our clients’ innovations and brand value.

Copyright
Patent
Trademark
Art & Cultural Property Law

Real Estate

Develioglu & Dag offers comprehensive legal services in property law to both domestic and international clients. Their expertise encompasses advising on the purchase and sale of movable and immovable property, transferring co-ownership shares, establishing real rights, and setting up easements. The firm also assists in drafting and reviewing contracts related to limited rights in rem, converting joint ownership into joint ownership shares, and handling disputes concerning ownership rights, claims for surrender, and land registry entries. Their services are tailored to meet the specific needs of each client, ensuring thorough legal support in all property-related matters.

Commercial Real Estate
Housing, Construction & Development
Foreclosure
Land Use & Zoning
Landlord & Tenant
Mortgage
Real Estate Due Diligence
Real Estate Contracts and Negotiations
Brokerage
Natural Resources

Similar lawyers in Istanbul

Avukat Üntaç Güner

Avukat Üntaç Güner

Istanbul, Turkey

Founded in 2002
5 people in their team
Turkish
English
Russian
Hebrew (modern)
Arabic
Litigation and consulting services. Full range of law office based in Istanbul with local contacts in all over Turkey.İstanbul'da kurulu ama Türkiye çapında yerel avukat ağı ile dava ve danışmanlık hizmetleri takip eden bir avukatlık bürosuyuz.Адвокатские услуги....
Avukat Bilal Çelik

Avukat Bilal Çelik

Istanbul, Turkey

Founded in 2011
9 people in their team
Turkish
In particular, the principles of trust, honesty, ethics, loyalty, and transparency; We aim to produce solutions within the framework of the rule of law and justice and laws and obligations, by respecting the rights of legal and natural persons who communicate during client and professional...
BAYAR LAW FIRM

BAYAR LAW FIRM

Istanbul, Turkey

Founded in 2002
10 people in their team
English
Bayar Law Firm in Istanbul provides legal advocacy and consultancy services in commercial law, real estate law, criminal law, contract law, family law, foreigners law and financial crime. While Bayar Law Firm provides advocacy and legal consultancy services, adopting healthy solutions with a...