Ibrahim Bey Gaydarov (; ) or İbrahim Haydar Bey (; ) (August 3, 1879, Derbent - September 23, 1949, Ankara) was a Lezgin Muslim travel engineer, noble, nationalist activist and one of the Northern Caucasian intellectuals. In 1918-1919 he served as Minister of Transport, Post and Telegraph in the Mountainous Republic. In 1919 he participated in the Versailles Peace Conference in France. He was fluent in Lezgian, Russian, Turkish, Azerbaijani, Kumyk and French, and possibly others he did not mention.