Quick Info
| Profession | Mixed martial artist |
|---|---|
| Nationality | Scottish-Australian |
| Date of Birth | 07/10/1997 |
| Age | 28 years |
| Birthplace | Irvine, Scotland |
Latest News about Casey O’Neill
19/09/2026
Casey O'Neill won at UFC 331 with a first-round submission victory over Eduarda Moura in Los Angeles. Post-fight coverage highlighted the performance as a comeback moment after a long injury-disrupted stretch, and O'Neill said she wants to keep building toward the top of the flyweight division.
16/09/2026
Ahead of UFC 331, O'Neill spoke about feeling ready for a renewed run at the flyweight title picture after overcoming setbacks. Coverage noted that she believed the timing was finally right for her career to accelerate again.
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Bio/Wiki
| Nickname | King |
|---|---|
| Sport | MMA |
| Division | Women's Flyweight |
| Promotion | UFC |
Physical Stats & More
| Height | 5'6" |
|---|---|
| Weight | 125 lbs |
| Stance | Orthodox |
Personal Life
| Known For | Competing in the UFC women's flyweight division |
|---|---|
| Training Background | Started kickboxing in early childhood and later added Brazilian jiu-jitsu and MMA |
Family
| Father | Cam O'Neill, a former professional kickboxer |
|---|
Career
| Professional Debut | 2019 |
|---|---|
| Notable Details | Has competed in the UFC and on the Australian regional MMA circuit |
| Belt | Brown belt in jiu-jitsu |
Style Quotient
| Fighting Style | Kickboxing-based striking with grappling skills |
|---|
Social Media
| https://x.com/kingcaseymma |
Some Lesser Known Facts
| 1. Began training kickboxing at a young age | |
| 2. Moved from Scotland to Australia during childhood | |
| 3. Started Brazilian jiu-jitsu as a teenager | |
| 4. Her nickname is 'King' |