Mahmud I (1696–1754), known as The Hunchback, was the Sultan of the Ottoman Empire from 1730 to 1754.
Mahmud I may also refer to:
Mahmud I of Great Seljuq (fl. 1092–1094), sultan of the Seljuk Empire Mahmud I (mansa) (fl. 1390–c. 1400), ruler of the Mali Empire Sultan Mahmud I (1445–1511), Sultan of Gujarat Sultanate Mahmud I of Kalat (fl. 1794–1817), ruler of the princely state of Kalat
See also Order of Sultan Mahmud I of Terengganu Mahmud (disambiguation) Mahmud II (disambiguation)