Doku Khamatovich Umarov (; ; also known as Dokka Umarov as well as by his Arabized name of Dokka Abu Usman; 13 April 1964 – 7 September 2013) was a Chechen Islamist militant in Russia. Umarov was a major military figure in both recent wars in Chechnya during the 1990s and 2000s, before becoming the leader of the greater insurgency in the North Caucasus. He was active mostly in south-western Chechnya, near and across the borders with Ingushetia and Georgia.