The 1939 French Championships (now known as the French Open) was a tennis tournament that took place on the outdoor clay courts at the Stade Roland-Garros in Paris, France. The tournament ran from 8 June until 17 June. It was the 44th staging of the French Championships and the last one held before a six-year hiatus due to World War II. It was the second of four Grand Slam tennis events of the year.
See main article: 1939 French Championships – Men's singles. 
Don McNeill defeated Bobby Riggs 7–5, 6–0, 6–3
See main article: 1939 French Championships – Women's singles. 
Simonne Mathieu defeated 
Jadwiga Jędrzejowska 6–3, 8–6
Don McNeill / Charles Harris defeated Jean Borotra / Jacques Brugnon 4–6, 6–4, 6–0, 2–6, 10–8
Simonne Mathieu / Jadwiga Jędrzejowska defeated Alice Florian / Hella Kovac 7–5, 7–5
Sarah Palfrey / Elwood Cooke defeated Simonne Mathieu / Franjo Kukuljević 4–6, 6–1, 7–5