Hasan Eren (March 15, 1919, Vidin, Bulgaria – May 26, 2007, Ankara, Turkey) was a Turkish academic etymologist, linguist, Turkologist, and Hungarologist specializing in Turkish language, other Turkic languages, and Hungarian language who served as head of the Turkish Language Association from 1983 to 1993. He is member of the Hungarian Academy of Sciences in 1988. Eren was working on etymology of Turkish for decades. He also wrote the Dictionary of Turkish Etymology. Viktor Orbán awarded Hasan Eren by a medal (Order of Merit of the Republic of Hungary) for his contributions to the Hungarian language on June 24, 2000.