Introduction
Craig Biddle (24 October 1879 – 1947) was an American male tennis player who was active in the second decade of the 20th century.
In 1920 he reached the final of the mixed doubles competition at the U.S. National Championships (now US Open) together with Molla Bjurstedt Mallory. They lost the final to Hazel Hotchkiss Wightman and Wallace F. Johnson in straight sets. His best singles performance in a Grand Slam tournament was reaching the quarterfinal of the U.S. National Championships in 1917, 1918 and 1921.
In September 1913 Biddle reached the final of the Montreux Autumn Meeting in Switzerland but was defeated by Anthony Wilding in three straight sets. In March 1920 he was runner-up at the Florida Tennis Championships, losing in the final in straight sets to Ichiya Kumagae.
Grand Slam finals
Mixed doubles
Runners-up (1)
| Year | Championship | Surface | Partner | Opponents | Score |
| 1920 | U.S. National Championships | Grass |  Molla Bjurstedt Mallory | Hazel Hotchkiss Wightman Wallace F. Johnson | 4–6, 3–6 |