John Victor Shea III is an American actor, film producer, and stage director. His career began on Broadway where he starred in Yentl, subsequently winning his first major award, the 1975 Theatre World Award. Shortly after his Off-Broadway career began, Lee Strasberg invited Shea to join the Actors Studio where he spent several years studying method acting.

Missing is a 1982 American biographical thriller drama film directed by Costa-Gavras from a screenplay written by Gavras and Donald E. Stewart, adapted from the book The Execution of Charles Horman: An American Sacrifice (1978) by Thomas Hauser, based on the disappearance of American journalist Charles Horman, in the aftermath of the United States-backed Chilean coup of 1973, which deposed the democratically elected socialist President Salvador Allende.