This article provides a comparative analysis of the concept of “joint data controllership” within the frameworks of the GDPR and Turkey’s Personal Data Protection Law (KVKK). It examines the legal foundations of the concept, the case law of the Court of Justice of the European Union, and its practical implications. The position of joint data controllership in Turkish law is assessed in light of the Personal Data Protection Board’s Decision No. 2021/1304. The significance of joint responsibility is emphasized, particularly in terms of the protection mechanisms available to data subjects and the principle of joint and several liability.

Bu makale, “ortak veri sorumluluğu” kavramını GDPR ve Türkiye’deki KVKK çerçevesinde karşılaştırmalı olarak ele almaktadır. Kavramın hukuki dayanakları, Avrupa Birliği Adalet Divanı kararları ve uygulamadaki yansımaları incelenmiş; Türk hukukundaki yeri Kurul’un 2021/1304 sayılı kararı ışığında değerlendirilmiştir. Ortak sorumluluğun, veri sahiplerine yönelik koruma mekanizmaları ve müteselsil sorumluluk açısından önemi vurgulanmıştır.

Foreign investors in Türkiye must ensure at least one board member holds unlimited representation authority, duly registered with the trade registry. Without it, companies risk legal incapacity, tax penalties, and even dissolution. Strategic compliance with Turkish governance rules is key to business continuity and legal certainty.

A joint stock company in Türkiye allows full foreign ownership and limits shareholder liability to capital contributions. With a minimum capital of TRY 250,000, it gains legal status upon registration. Companies must meet tax, audit, and compliance obligations. This structure offers a secure, flexible option for foreign investors.