Igor Zinoviev (born 1967) is a Russian mixed martial arts fighter. He competed in the Extreme Fighting organization, holding the middleweight title until their demise, then moved to the Ultimate Fighting Championship. Most recently, he coached the Chicago Red Bears in the International Fight League.

Igor Zinoviev's mixed martial arts debut came at the inaugural World Extreme Fighting event, where he defeated Mario Sperry to claim the organization's middleweight title. He also fought in Vale Tudo Japan, defeating Enson Inoue. Zinoviev's final mixed martial arts bout (to date) was against Frank Shamrock at UFC 16. 22 seconds into the match, Shamrock took Zinoviev down with a powerful slam that knocked him unconscious and broke his collarbone, finishing his fighting career.

In November 2006, the International Fight League announced that Zinoviev would coach the new IFL team the Chicago Red Bears, which would consist primarily of Russian fighters.