Sheila Gaff (December 29, 1989) is a German mixed martial artist, and was fighting in the bantamweight division of the Ultimate Fighting Championship but was released on August 12, 2013. Since May 14, 2015 she has been under contract with XFC. She is known for her berserker fighting style, which has resulted in most of her wins coming via (T)KO stoppage within the first two minutes.