+90 212 246 11 19



Öncel, Aydın & Uygun Attorney Partnership was founded in 1973 under the name “Öncel Law Firm” by Att. E. Sefa Öncel who also worked as the chief legal head of Zorlu Group of Companies, one of the leading conglomerates in Turkey. Since its inception, Öncel Law Firm became a highly regarded law firm specializing in litigation, debt collection, administrative law, corporate and commercial law.

After undergoing restructuring, Öncel Law Firm changed its name to Öncel, Aydın & Uygun Attorney Partnership with the addition of second-generation partners and expanded its practice in the international arena. In less than 2 years, Öncel, Aydın & Uygun Attorney Partnership successfully included numerous prestigious local and international clients from various sectors in its portfolio and established a broad client base.

Our partners received legal education in the United States and United Kingdom. Moreover, Att. Erman Öncel and one of our senior associates Att. Amine Tuğçe Duman are also members of the New York State Bar. Our law firm is fluent in English.

While having a team of young, energetic and innovative lawyers, Öncel, Aydın & Uygun Attorney Partnership also benefits from a solid local background spanning over four decades. We strive to provide our services in a global and modern perspective with a business-minded and solution-oriented approach.

Our law firm’s philosophy is built on valuing our clients as life-time business partners and providing them long-term legal services in almost every aspect of the business life. Our purpose is to build the businesses of our clients on solid legal foundations and make sure our clients receive proper legal support on the road to commercial success.

All information contained on this website have been provided for information purposes only and do not constitute advertisement, proposal or legal advice of any kind. All information may be subject to change without notice. English and Turkish parts of this website may be different. Please contact us for a professional advice.
(+90) 212 246 11 19
(+90) 212 231 42 17
Maslak Mah. Ahi Evran Cad.
Polaris Plaza No:21 Kat:15 D:63
Sarıyer-Istanbul, Turkey