Holly Rene Holm is an American mixed martial artist. She previously competed in the women's Bantamweight division of the Ultimate Fighting Championship, where she is a former Women's Bantamweight Champion. Holm is also a former professional boxer. She has been a multiple-time world champion, defending her titles 18 times in three weight classes, and a two-time Ring magazine fighter of the year. She is ranked by BoxRec as the 2nd greatest female professional boxer of all time, pound for pound.