Hüseyin Nihâl Atsız was a prominent Turkish ultranationalist writer, novelist, and poet. Atsız self-identified as a racist, Pan-Turkist and Turanist. He later became a critic of Islam, calling it "a religion created by Arabs, for Arabs". He is the ideologue of Atsızism. He was the author of over 30 books and numerous articles and was in strong opposition to the government of İsmet İnönü, which he criticized for co-operating with the communists. He was accused of being a sympathizer of the Nazi government and plotting to overthrow the Turkish government.

Pan-Turkism or Turkism is a political movement that emerged during the 1880s among Turkic intellectuals who lived in the Russian region of Kazan (Tatarstan), Caucasus and the Ottoman Empire, with its aim being the cultural and political unification of all Turkic peoples. Turanism is a closely related movement but it is a more general term, because Turkism only applies to Turkic peoples. However, researchers and politicians who are steeped in the pan-Turkic ideology have used these terms interchangeably in many sources and works of literature.