Usman Magomednabiyevich Nurmagomedov is a Russian professional mixed martial artist currently competing in the Lightweight division of Bellator MMA, where he is the current Bellator Lightweight Champion. He has previously competed in the UAE Warriors and Eagle Fighting Championship. He is the younger brother of UFC fighter Umar Nurmagomedov and a cousin of former UFC Lightweight Champion Khabib Nurmagomedov.

Eagle Fighting Championship (EFC), commonly referred to as Eagle FC, is a Russian mixed martial arts promotion company established in 2020 by former UFC Lightweight Champion Khabib Nurmagomedov. It was renamed to Eagle Fighting Championship (EFC) after Nurmagomedov bought Gorilla Fighting Championship (GFC) for $1 million.