1915 U.S. National Championships (tennis)

The 1915 U.S. National Championships were tennis tournaments held in August 1915. The men's tournament was held at the West Side Tennis Club in Forest Hills, New York City. The women's tournament was held at the Philadelphia Cricket Club in Philadelphia, Pennsylvania.

Richard Sears won the men's singles title, defeating Maurice McLoughlin in the final. Molla Bjurstedt Mallory won the women's singles title, defeating Hazel Hotchkiss Wightman in the final. The men's doubles title was won by Clarence Griffin and Bill Johnston. Hazel Hotchkiss Wightman and Eleonora Sears won the women's doubles title. The mixed doubles title was won by Hazel Hotchkiss Wightman and Harry Frazee.

The move of the men's championships from Newport, Rhode Island, to Forest Hills marked a significant shift in the landscape of American tennis, reflecting the growing importance of New York City as a center for the sport.