'''Qara Yuluk Uthman Beg''' or '''Osman Mirza Beg''' ({{lang-az|Qara Yuluq Osman Bəy}}; {{lang-tr|Kara Yülük Osman Bey}}; 1356 – 1435) was a late 14th and early 15th-century leader of the [[Turkoman (ethnonym)|Turkoman]]<ref>Kaushik Roy, ''Military Transition in Early Modern Asia, 1400-1750'', (Bloomsbury, 2014), 38;"''Post-Mongol Persia and Iraq were ruled by two tribal confederations: Akkoyunlu (White Sheep) (1378–1507) and Qaraoyunlu (Black Sheep). They were Persianate Turkoman Confederations of Anatolia (Asia Minor) and Azerbaijan.''"</ref> [[tribe|tribal]] [[Federalism|federation]] of [[Aq Qoyunlu]] in what is now eastern [[Turkey]], [[Iran]], [[Azerbaijan]] and [[Iraq]].
