Michael Seater (born January 15, 1987) is a Canadian actor, director, screenwriter, and producer. From 2005 to 2009, he starred as the titular role in the Canadian sitcom Life with Derek. He later portrayed James Gillies in Murdoch Mysteries, from 2009 to 2017. His directing credits include the independent feature films People Hold On (2015) and Sadie's Last Days on Earth (2016).
Seater was born and raised in Toronto, Ontario. He attended the Etobicoke School of the Arts and worked as a child actor.
Seater began acting in the late 1990s and appeared in the short films Night of the Living and The Stone Skipper, and had minor roles in the direct-to-video film Future Fear and the made-for-television films Rescuers: Stories of Courage: Two Couples, Vanished Without a Trace, On Thin Ice, Dirty Pictures, Cyber Seduction: His Secret Life, the Hanukkah-themed Jenny and the Queen of Light, as well as in episodes of several television series, including The Zack Files.