Osman Mahmoud (Somali: Cusmaan Maxamuud) is a Somali sub-clan. It is one of the larger sub-clans within the major Majeerteen Harti confederation of Darod clans. The sub-clan is most notorious for its rich history within Somalia, that of which include sultanates such as the Majeerteen Sultanate The sub-clan has also had some of Somalia's most successful international figures. Osman Mahamud has produced the first ever Somali member and President of the International Court of Justice (ICJ), the first ever Somali-American lawmaker, 2013, Founder of , and many, many others.