Irish Bob Murphy (July 22, 1922 – August 17, 1961) was an Irish-American light heavyweight boxer who fought from 1945 to 1954.

Murphy, who was a southpaw, was a top light heavyweight contender, and in 2003 made the Ring Magazine's list of 100 greatest punchers of all time.

Nicknamed "Jack" Conarty during his service aboard the "Mighty A," he was known as an exciting boxer who "packed a blockbuster in his left (southpaw) and would take anything his opponent could hand out just long enough to unload one of his bombs."

Under the new professional name Irish Bob Murphy, he unsuccessfully challenged Joey Maxim for the light heavyweight championship on August 22, 1951.

Murphy's biggest win came on June 27, 1951, against former middleweight champion Jake LaMotta, who had moved up to the light heavyweight division after losing his crown to Sugar Ray Robinson.