Ateizm Derneği (English: Association of Atheism) is a Turkish non-profit organisation that describes itself as a freethinker association[1] founded on 16 April 2014 for the promotion and advocacy of the concept of atheism, and serves to support irreligious people and freethinkers in Turkey who are discriminated against based on their views.

[3] At the time of the foundation, the organisation was headed by a board consisting of eleven members, presided by Tolga İnci.

[2] The direct cause to form the organisation was a remark made by president Recep Tayyip Erdoğan,[2] who has stimulated tendencies to Islamise Turkey, and said "... despite the [protests of] leftists, despite those atheists.

[7][8] Ateizm Derneği was recognised by the European Union as the representative organisation of Turkish atheists in June 2014.

[13] In November 2021, during a stereotyping hate speech AKP writer tr:Emine Şenlikoğlu said, “Atheism and deism are like the animal kingdom..." Şenlikoğlu said, "Father and daughter, mother and son and sibling in atheism or deism indulge in incest.