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. Makhachev has competed professionally 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.