Jake O'Brien

American martial artist

ジェイク・オブライエン

Born

25 September 1984, Indianapolis

Citizenship

United States

Sport

mixed martial arts

Occupation

mixed martial arts fighter

Jake O'Brien (born September 25, 1984) is an American retired professional mixed martial artist who most recently competed in the Heavyweight division. A professional competitor from 2005 until 2012, he fought for the UFC, WEC, and DREAM.

External links

• Wikipedia
• Sherdog
• Wikidata

Facts from Wikidata Q6124895 (CC0); quoted introduction from English Wikipedia (CC BY-SA 4.0). Data retrieved 2026-10-22.

Data: Wikidata (CC0 1.0); Wikipedia (English) (CC BY-SA 4.0). Retrieved 2026-10-22.