Anatoly Sergeevich Malykhin is a Russian mixed martial artist and wrestler. Malykhin is signed to ONE Championship where he is the current Light Heavyweight World Champion, and Middleweight World Champion.

He is the first fighter in history to win major MMA championships in three weight classes and the first to hold them simultaneously. A professional competitor since 2016, Malykhin has also competed for Fight Nights Global. As of March 17, 2024, he is ranked as the #14 light heavyweight in the world by Fight Matrix.

Malykhin was born in Kemerovo, Kemerovo Oblast, Soviet Union (now Russian Federation). He began wrestling in the fifth grade and won several youth championships. In 2013, he won gold at the President Cup of Buryatia Republic in freestyle wrestling and placed third at the Russian national championship as a heavyweight. Malykhin was later disqualified for two years because he did not appear for doping tests, which he claims was due to a misunderstanding. In 2016, Malykhin competed in submission grappling, winning at the championships for the Kemerovo region and the Siberian Federal District to qualify for the All-Russian championships. Malykhin was the runner-up at the All-Russian championships, qualifying for the UWW European championships. At the European grappling championships in July, Malykhin won gold in the 100+ kg division.