John Joseph Haley Jr. (August 10, 1897 – June 6, 1979) was an American actor, comedian, dancer, radio host, singer and vaudevillian. He was best known for his portrayal of the Tin Man and his farmhand counterpart Hickory in the 1939 Metro-Goldwyn-Mayer film The Wizard of Oz.

Early life
Haley was born on August 10, 1897. His father was a waiter by trade, and later a ship's steward. He died in the wreck of the schooner Charles A. Briggs at Nahant, Massachusetts on February 1, 1898, when Jack was almost six months old. He had one older brother, William Anthony "Bill" Haley, a musician, who died of pneumonia in 1916 at the age of twenty-one after contracting tuberculosis.