Jack Abbott is a fictional character from the American CBS soap opera The Young and the Restless. The character was introduced in 1980 being portrayed by Terry Lester. Lester departed from the series in 1989 and was replaced by Peter Bergman shortly thereafter. Bergman relocated to California for the role after he successfully auditioned for the part. His first episode aired on November 27, 1989. Jack is known for his longstanding feud with the Newman family patriarch, Victor Newman as well as his romances with Nikki Newman, Phyllis Summers and Sharon Newman. Jack has represented the Abbott family as the patriarch since the 2006 passing of his father, John Abbott.