Trent Sullivan (born 8 April 1993) is an Australian movie and television actor, born in Sydney. He received his start in acting at four years of age when he played Rupert in the comedy-drama film Me Myself I (film).

Trent attends Griffith University on the Gold Coast, Queensland.

Sullivan currently performs in the Channel Ten and Nickelodeon UK programme H2O: Just Add Water, where he plays Elliot Gilbert, the younger brother of main character Emma. He has also appeared in The Sleepover Club, Jeopardy, The Condemned and Sea Patrol.