UFC 219: Cyborg vs. Holm was a mixed martial arts event produced by the Ultimate Fighting Championship held on December 30, 2017, at the T-Mobile Arena in Paradise, Nevada, part of the Las Vegas metropolitan area.

Cristiane Justino Venâncio, known professionally by her ring name Cris Cyborg, is a Brazilian-American mixed martial artist who as of January 2021 competes in Bellator MMA, where she is the current Bellator Women's Featherweight Champion, having held the title since January 2020. She is also a former UFC, Strikeforce and Invicta FC World Featherweight Champion. She is the only MMA fighter in history to become a Grand Slam Champion, holding world championships across four major mixed martial arts promotions. Cyborg is widely regarded as one of the greatest female mixed martial artists of all time.