Jimmy Walsh (July 18, 1883 – November 23, 1964) was an American boxer who claimed the World Bantamweight Championship on March 29, 1905, when he defeated Monte Attell, in a controversial six-round bout at the National Athletic Club in Philadelphia. His claim was recognized by the World Boxing Association, at the time the National Boxing Association. The fight ended in a disqualification called by the referee when Walsh sent a low right hook that landed below the belt of Attell. Most sources believed Walsh had led throughout the fight and that the blow should have been considered legal, which may be why Walsh was credited with the title by the National Boxing Association.