Casey O’Neill

Casey O’Neill Bio

Casey O'Neill (born 7 October 1997) is a Scotland-born Australian mixed martial artist (MMA). She currently competes in the Flyweight division in the Ultimate Fighting Championship (UFC). Casey began training in kickboxing at the age of four. At thirteen, Casey began training in other martial arts such as Brazilian jiu-jitsu. She competed in her first amateur MMA fight at the age of 15 where she was beaten in the first round.

Casey committed herself to honing her skills for six years turning professional at 21. On April 5, 2019, Casey made her professional debut against Amira Hafizović at the Eternal MMA 43 event. She won via a unanimous decision. After her debut win, Casey secured three more wins domestically against Jada Ketley, Miki Motono and Caitlin McEwen before accepting her first fight abroad with the UAE Warriors promotion. In September 2020, Casey O’Neill defeated Christina Stelliou in a second round technical knockout at UAE Warriors 13. The victory earned her a four-fight contract with the UFC.

In her UFC debut, Casey struck with a dominant second round knockout victory over Shana Dobson. As of October 2022, Casey O'Neill has had a total of 9 wins and 0 losses with a 56% finish rate, including 3 by knockout, 2 by submission, 4 by decision.