BILLY O'BRIEN

0-10% win rate

FIGHTER IDENTITY

B

Gym / Team

Bones MMA
Roots

Organization

Roots
AUS

Nationality

Australian

Birth

01/01/2007 (19)

Birthplace

Torquay

Australia

Sport / Status

Muay Thai · Active

Weight class

Lightweight

Height

178 cm (5'10")

Reach

180 cm (71")

Biography

Billy O'Brien is an Australian Muay Thai fighter who trains at Bones MMA in Torquay, Victoria. He gained international recognition as an amateur by winning gold at the 2025 WBC Amazing Muay Thai World Festival in Italy before making his professional debut in 2026.

Fight history (1)

Loss
vs Caylum BarberKnockout / Technical Knockout (R1)Roots - February 28, 2026 — 28/02/2026

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