This thesis aims to analyze the re-emergence of the Armenian question as an aspect of Armenian nationalism and its effects on Turkey between the years 1960 and 1990. The Armenian question is a very controversial political issue with its multi-dimensional characteristic. The Armenian question emerged with the Ottoman Armenians&rsquo / autonomy demands as an extension of Armenian nationalism in the nineteenth century. With the interest of the imperialist states, the Armenian question became an international problem especially after the Ottoman-Russian War of 1877-1878. Although the Armenian question reached its peak in World War I, it dropped from the international agenda by the Peace Treaty of Lausanne in 1923. After World War II, the Armenian question was transformed into an international issue once again by Joseph Stalin the leader of the USSR that was used as a political trump against Turkey in the Cold War period. Especially, the date April 24, 1965 became a remarkable turning point in the re-emergence of the Armenian question as an aspect of Armenian nationalism. Since 1965, the Armenian Diaspora has used the Armenian question to materialize dream of the &ldquo / Greater Armenia.&rdquo / Today, the Armenian question has affected Turkey&rsquo / s bilateral and multilateral relations with other countries especially with the Republic of Armenia and the United States of America. By this thesis, these whole facts will be analyzed to expose the historical background of the re-emergence of the Armenian question as an aspect of Armenian nationalism, and its effects on Turkey between the years 1960-1990, and to contribute to the academic literature.