The 1925 French Championships (now known as the French Open) was a tennis tournament that took place on the outdoor clay courts at the Stade Français in Paris, France. The tournament ran from 28 May until 6 June. It was the 30th staging of the French Championships and the second Grand Slam tournament of the year. It was the first time the tournament was open to players who were neither French citizens nor residents of France.

Suzanne Lenglen won all three events she entered; the women's singles, the women's doubles, and the mixed doubles.

René Lacoste defeated Jean Borotra 7–5, 6–1, 6–4

Suzanne Lenglen defeated Kitty McKane 6–1, 6–2

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