Islam Ramazanovich Makhachev (Russian: Ислам Рамазанович Махачев; born 27 October 1991) is a Russian professional mixed martial artist and former sambo competitor. He currently competes in the Lightweight division of the Ultimate Fighting Championship (UFC), where he is the current UFC Lightweight Champion. A professional since 2010, along with becoming a combat sambo world champion in 2016 and two-time Russian national champion at 74 kg (2014, 2016). As of 7 November 2023, he is #1 in the UFC men's pound-for-pound rankings.