"Lefty" Lew Tendler (September 28, 1898, in Philadelphia, Pennsylvania – November 5, 1970, in Atlantic City, New Jersey) was an American boxer.
He is generally considered one of the best boxers to never have won a world title, though he was a top rated contender for both the world light and welterweight championships.
Statistical boxing website BoxRec lists Tendler as the #10 ranked lightweight of all time, while The Ring Magazine founder Nat Fleischer placed him at #9.
He is a member of the International Jewish Sports Hall of Fame, the Ring Magazine Hall of Fame, the World Boxing Hall of Fame, and the International Boxing Hall of Fame.