1931 French Championships
Date	22–31 May 1931
Edition	36th
Category	7th Grand Slam (ITF)
Surface	Clay
Location	Paris (XVIe), France
Venue	Stade Roland Garros
Champions
Men's singles
Jean Borotra[1]
Women's singles
Cilly Aussem[2]
Men's doubles
George Lott / John Van Ryn
Women's doubles
Eileen Bennett Whittingstall / Betty Nuthall
Mixed doubles
Betty Nuthall / Patrick Spence
← 1930 · French Championships · 1932 →

The 1931 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 22 May until 31 May. It was the 36th staging of the French Championships and the second Grand Slam tournament of the year. Jean Borotra and Cilly Aussem won the singles titles.

Finals

Men's singles

Jean Borotra defeated Christian Boussus 2–6, 6–4, 7–5, 6–4

Women's singles

Cilly Aussem defeated Betty Nuthall 8–6, 6–1

Men's doubles

George Lott / John Van Ryn defeated Vernon Kirby / Norman Farquharson 6–4, 6–3, 6–4

Women's doubles

Eileen Bennett Whittingstall / Betty Nuthall defeated Cilly Aussem / Elizabeth Ryan 9–7, 6–2

Mixed doubles

Betty Nuthall / Patrick Spence defeated Dorothy Shepherd Barron / Bunny Austin 6–3, 5–7, 6–3