Casey O’Neill is a Scottish-born Australian professional mixed martial artist. She currently competes in the Ultimate Fighting Championship (UFC) women’s flyweight division. Casey is currently #12 in her division’s rankings.

Her estimated net worth is $500k. Here we bring you Casey O’Neill’s net worth, salary, earnings, career, bio, and more.

Casey O’Neill’s Biography and Career

Casey Cameron O’Neill was born on 7 October 1997 in Irvine, Scotland, United Kingdom. Her father, Cam, was a professional kickboxer.

Casey began training in kickboxing at the age of 4. She moved to Gold Coast, Australia, with her family, when she was 10. Later, she transitioned to Muay Thai, Brazilian Jiu-Jitsu, and mixed martial arts.

MMA Career

Casey O’Neill made her professional MMA debut in 2019. She competed in the Eternal MMA and UAE Warriors before joining UFC.

King Casey won the Eternal MMA Strawweight Championship in her debut fight and defended the belt once.

Casey O’Neill is an excellent young prospect in the UFC women’s flyweight division. She boasts a 4-0 UFC record. As of writing, she is #12 in the UFC women’s flyweight division.

King Casey beat the likes of Lara Procopio, Antonina Shevchenko, and Roxanne Modafferi in her last three bouts. She beat Roxanne at UFC 271 in February 2022. She became the UFC Performance of the Night once, against Antonina Shevchenko.

Casey O’Neill is scheduled to face Jennifer Maia at UFC 286, on March 18, 2023, in a women’s flyweight bout on the main card.

Casey O’Neill’s Net Worth, Salary, and Earnings

In 2023, UFC flyweight Casey O’Neill’s estimated net worth is $500k. Her primary sources of earnings are her fight purse and incentives.

King Casey’s estimated base salary is close to $30,000 for a fight, depending on her UFC contract, the event, and the opponent.

For her impressive win over Roxanne at UFC 271, she received a $48,500 total payout ($22k to show, $22k win bonus, and $4.5k fight week incentives).

She pocketed $94,000 total payouts for her victory over Antonina Shevchenko, including the $50,000 UFC Performance of the Night bonus.

Moreover, the rising flyweight star Casey earns a considerable chunk from endorsements and brand promotions.

Personal Info

Full Name Casey Cameron O’Neill
Nickname King Casey
Date of Birth 7 October 1997
Birth Place Irvine, Scotland, United Kingdom
Nationality British, Australian
Age 25
Height 168 cm (5 ft 6 in)
Weight 125 lb (57 kg)
Division Women’s Flyweight
Promotion UFC
MMA Record 9-0
Net Worth $500k
Base Salary $30,000 (approx.)
Relationship Status In a Relationship
Boyfriend Ty Gwerder
Instagram @kingcaseymma


UFC women’s flyweight Casey is in a relationship. Her boyfriend is Ty Gwerder. Ty is also an MMA fighter and competes in the Bellator MMA. The couple has been together for a few years.

King Casey and her boyfriend Ty. Source: Instagram


Born on 7 October 1997, she is 25 years old.

Height and Weight

She is 168 cm (5 ft 6 in) tall and 125 lb. She competes in the UFC women’s flyweight division.

MMA Record

[As of March 14, 2023]

Total Fights 9
Wins 9
Win by KO/TKO 3


What is Casey O’Neill’s Net Worth in 2023?

In 2023, her estimated net worth is $500k.

Who is her boyfriend? 

Her boyfriend is Ty Gwerder.

Related: Alexandr Romanov Net Worth

M. Abdullah is a celebrity author with a keen interest in all things related to the rich and famous. He has built a reputation as a go-to source for the latest and trendy celebrity gossip and in-depth information and resources on the net worth of some of the world's most prominent celebrities, players, athletes, and politicians.


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