Thomas Ian Nicholas is an American actor, film producer and singer. He is best known for playing Henry Rowengartner in Rookie of the Year, Walt Disney in Walt Before Mickey and Kevin Myers in the American Pie film series. He starred in the 2021 film Adverse with Mickey Rourke.

Rookie of the Year is a 1993 American sports comedy film starring Thomas Ian Nicholas and Gary Busey as players for the Chicago Cubs of Major League Baseball. The cast also includes Albert Hall, Dan Hedaya, Eddie Bracken, Amy Morton, Bruce Altman, John Gegenhuber, Neil Flynn, Daniel Stern, and John Candy in an uncredited role.