George Clark Hearn Jr. (born June 18, 1934) is an American actor and singer. In 1980, he became the lead in Stephen Sondheim's Sweeney Todd opposite Dorothy Loudon. He played Sir Dinidan in a national tour of Camelot. In 1985, Hearn starred as Long John Silver in an Edmonton production of Pieces of Eight.
In 2004, Hearn returned to Broadway for the first time in four years, starring as the Wizard in the Broadway musical Wicked, remaining until May 29, 2005.
In 1984, he won a Drama Desk Award. In 1985, Hearn won an Emmy Award. He has won two Tony Awards (1984, 1995).