Elias Koteas was born on 11 march 1961 in Montreal, Quebec, Canada, to a father who worked as a mechanic for the Canadian National Railways, and a milliner mother. His parents are both of Greek descent, from the Mani Peninsula, and he is a fluent Greek speaker. Koteas attended Vanier College in Montreal before leaving to attend the American Academy of Dramatic Arts in New York in 1981, of which he is a 1983 graduate. He was a member of the Academy's 1983–84 Production Company. He also attended the Actors Studio in New York City, where he studied acting under Ellen Burstyn and Peter Masterson. He went to Centennial Regional High School in Greenfield Park, Quebec and graduated from there. While at the AADA, Koteas played Father Rangier in the school's production of The Devils adapted by John Whiting from the Aldous Huxley novel. He was also Paris in The Golden Apple, a musical by John Latouche and Jerome Moross. Koteas played the supporting role of Specialist Pete Deveber in Gardens Of Stone (1987). He is best known for playing the lead role of Thomas Daggett in the American film The Prophecy, as well as the sports-crazed vigilante Casey Jones in the Teenage Mutant Ninja Turtle films. Koteas also appeared in The Greatest Game Ever Played, a Disney biography about a young golfer, as well as the thrillers Skinwalkers (2006), Zodiac (2007), and Shooter (2007).

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