John Bryant Paine (April 19, 1870 in Boston, Massachusetts – August 1, 1951 in Weston, Massachusetts) was an American shooter. He competed at the 1896 Summer Olympics in Athens. Paine was the son of Charles Jackson Paine who was a general in the Union Army during the American Civil War, and also was the younger brother to Sumner Paine. He graduated from Harvard College. After the Olympics, Paine went on to fight in the Spanish–American War before returning to Boston, Massachusetts, and becoming a wealthy investment banker.