
Tom O'Sullivan is an Australian television, film and theatre actor. O’Sullivan was born in Perth, Western Australia, and later relocated to Sydney to study at the National Institute of Dramatic Art where he graduated in 2003. His first television role was a guest role on the soap opera Home and Away and was followed by playing Tom Huppatz in the ABC TV mini-series Rain Shadow. In 2010, O'Sullivan played Sean 'Grunter' Sinclair in the crime drama Underbelly: The Golden Mile and joined the main cast of Nine Network drama Cops LAC playing Senior Constable Nathan Holt. He has also portrayed William Chambers in the TVNZ 1 drama When We Go To War and Michael Shrimpton in the Seven Network drama series Molly.

Alien: Covenant
2017 · as David / Walter Double

Fool's Gold
2008 · as Precious Gem Crew Member 2

Truth
2015 · as Newscaster

X-Men Origins: Wolverine
2009 · as Logging Supervisor

The Furies
2019 · as Derek

Avarice
2022 · as Ryker

Boys Grammar
2005 · as Nick

The Reckoning
2014 · as Connor

Observance
2016 · as Bret Buchanan

Molly
2016 · as Michael Shrimpton

Portrait of a Zombie
2012 · as Neighbour

Boys Briefs 3: Between the Boys
2006

It Only Takes a Night
2023 · as Gavin

The Skeleton Tree
2025 · as Lance