1911 U.S. National Championships – Women's singles

Reigning champion Hazel Hotchkiss won the singles tennis title of the 1911 U.S. Women's National Singles Championship by defeating Florence Sutton 8–10, 6–1, 9–7 in the challenge round. Sutton had won the right to challenge Hotchkiss by defeating Eleonora Sears 6–2, 6–1 in the final of the All Comers' competition. The event was played on outdoor grass courts and held at the Philadelphia Cricket Club in Wissahickon Heights, Chestnut Hill, Philadelphia, from June 12 through June 17, 1911.