Jack J. Clark (September 23, 1879 – April 12, 1947) was an American director and actor of the early motion picture industry. Clark was born on September 23, 1879, in Philadelphia, Pennsylvania. He was persuaded to enter motion pictures in 1907 by Sidney Olcott of the New York-based Kalem Studios during the silent film era. Clark traveled through 24 countries with the film company becoming one of the first American film stars to film on foreign location. While in the Holy Land, Kalem Studios produced the first passion play, From the Manger to the Cross, casting Jack Clark as John the Apostle. Clark and co-star Gene Gauntier were married during the filming, in 1912. They divorced in 1918.