Eric James McCormack (born April 18, 1963) is a Canadian-American actor known for his role as Will Truman in the American sitcom Will & Grace and Dr. Daniel Pierce in the American crime drama Perception.

Born in Toronto, McCormack began his acting career performing in high school plays. He left Ryerson University in 1985 to accept a position with the Stratford Shakespeare Festival, where he spent five years performing in numerous play productions.

For much of the late 1990s, he lived in Los Angeles and had minor roles. He made his feature film debut in the 1992 science-fiction adventure film The Lost World. McCormack appeared in several television series, including Top CopsStreet JusticeLonesome Dove: The SeriesTownies, and Ally McBeal. McCormack later gained worldwide recognition for playing Will Truman in Will & Grace, which premiered in September 1998. His performance has earned him six Golden Globe nominations and four Emmy nominations, ultimately winning the Primetime Emmy Award for Outstanding Lead Actor in a Comedy Series in 2001.

Aside from appearing in television, he made his Broadway debut in the 2001 production of The Music Man and starred in the 2005 film The Sisters. Following the series conclusion of Will & Grace in 2006, McCormack starred as the leading role in the New York production of Some Girl(s). He starred in the television miniseries The Andromeda Strain (2008) and returned to television in 2009 in the TNT drama Trust Me, which was cancelled after one season. Also in 2009, McCormack was cast in the science-fiction movie Alien Trespass. In addition, he starred as Dr. Daniel Pierce for three seasons of the TNT crime drama Perception, and provided the voice of "Lucky" on The Hub's Pound Puppies.

From 2009-2010 he starred as Dr Max Kershaw, the psychiatrist then turned boyfriend of Julia Louis-Dreyfus in The New Adventures of Old Christine.