Eric James McCormack (born April 18, 1963) is an Canadian actor, musician, writer and producer. He is best known for his role as Will Truman in the American sitcom Will & Grace.

McCormack was born in Toronto, Ontario, Canada, the son of Doris, a homemaker, and Keith McCormack, an oil company financial analyst. He has Cherokee and Scottish ancestry. McCormack attended Sir John A. Macdonald Collegiate Institute in Scarborough, Ontario. McCormack attended high school with David Furnish. Educated and trained as an actor in Canada at the Ryerson University School of Theatre in Toronto, McCormack has been appearing in television productions since his debut in 1986.

McCormack played Colonel Francis Clay Mosby in the 1-hour Western television miniseries Lonesome Dove: The Series (1994), and Lonesome Dove: The Outlaw Years (1995). He starred as the immortal Matthew McCormick in the Highlander: The Series episode "Manhunt" (1996). In 1997, he appeared in The Outer Limits in the episode "Tempests" and the holiday film, Borrowed Hearts as Sam Fields. In 1998, McCormack starred in the cult hit film Free Enterprise with William Shatner, playing a character based closely on the life of the film's co-writer Mark A. Altman. A sequel is in pre-production, and it is expected that McCormack will reprise his role as Mark.