Magomed Mustafaev (born August 2, 1988) is a Russian mixed martial artist, who competed in the Lightweight division of the UFC. A professional competitor since 2011, he has also competed for M-1 Global.

Magomed Mustafaev was born on February 8, 1988, in the village of Aimaki in modern-day Dagestan. He began training in freestyle wrestling while in elementary school. After high school, he moved to Sochi and started training MMA. He is the winner of the Pankration Black Sea Cup.

Mustafaev made his professional mixed martial arts debut on April 29, 2011, defeating fellow Russian Marat Medzhidov by TKO in the first round. The first loss on his professional record came in his next fight less than three months later against Dagestani Arsen Ubaidulaev due to a rear-naked choke.

Mustafaev faced to Russian MMA prospect Andrei Koshkin on March 14, 2014, at M-1 Challenge 46. He won via submission in the second round.

On September 1, 2014, Mustafaev competed in the Sochi Star 2014 Welterweight Grand Prix. Mustafaev defeated Amirkhan Adaev and Gleb Morozov both by KO in the first round. Mustafaev followed up with another winning performance against Russian MMA prospect and WSOF fighter Abubakar Nurmagomedov (cousin of Khabib Nurmagomedov) to claim the tournament victory and propel himself into consideration for a shot in a top tier MMA promotion.

Following the tournament victory and a 10 fight win streak in various Russian MMA events, Mustafaev signed with the Ultimate Fighting Championship on November 6, 2014. In his move from Russian MMA promotions to the UFC, Mustafaev transitioned from Welterweight to the Lightweight division.

Mustafaev first fought in the UFC opposite Piotr Hallmann on June 20, 2015, at UFC Fight Night 69 in Berlin, Germany. Mustafaev won by TKO (doctor's stoppage) in the second round due to multiple cuts around the eyes of Hallmann.

Mustafaev faced Joe Proctor at UFC 194 on December 12, 2015. He won the fight via TKO in the first round after a liver kick.