Julian McMahon is known for his roles as Cole Turner (a.k.a. Belthazor) (2000-2003, 2005) on the WB TV show "Charmed (1998-2006)", as Dr. Christian Troy on the FX TV show "Nip/Tuck (2003-2010)", and as FBI SSA Jess LaCroix (2019-2022) on the CBS TV shows "FBI (2018-)", "FBI: International (2021-2025)" and "FBI: Most Wanted (2020-2025)".

He played Ben Lucini (1989-1991) on the Seven Network soap drama "Home and Away (1988-)", Ian Rain (1992-1994) on the NBC TV soap drama "Another World (1964-1999)", John Grant on the NBC TV show "Profiler (1996-2000)" .

Some other TV shows he appeared on are "The Power, The Passion", "G.P.", "Will & Grace", "Full Circle", "Childhood's End", "Hunters", "Dirk Gently's Holistic Detective Agency", "Runaways" and "The Residence".

He played Victor von Doom (a.k.a. Doctor Doom) in the movies "Fantastic Four (2005)" and "Fantastic Four: Rise of the Silver Surfer (2007)".

Some other movies he appeared in are "Wet and Wild Summer! (1992)", "Magenta (1997)", "In Quiet Night (1998)", "Chasing Sleep (2000)", "Another Day (2001)", "Meet Market (2004)", "Premonition (2007)", "Prisoner (2007)", "RED (2010)", "Faces in the Crowd (2011)", "Rogue (2012)", "Bait (2012)", "Fire with Fire (2012)", "Paranoia (2013)", "You're Not You (2014)", "Swinging Safari (2018)", "Monster Party (2018)", "The Surfer (2024)", "The Supremes at Earl's All-You-Can-Eat (2024)".