The 1955 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 24 May until 4 June.

It was the 59th staging of the French Championships, and the second Grand Slam tennis event of 1955.

Tony Trabert and Angela Mortimer won the singles titles.

Tony Trabert defeated Sven Davidson 2–6, 6–1, 6–4, 6–2 Angela Mortimer defeated Dorothy Knode 2–6, 7–5, 10–8 Vic Seixas / Tony Trabert defeated Nicola Pietrangeli / Orlando Sirola 6–1, 4–6, 6–2, 6–4 Beverly Baker Fleitz / Darlene Hard defeated Shirley Bloomer / Patricia Ward 7–5, 6–8, 13–11 Darlene Hard / Gordon Forbes defeated Jenny Staley / Luis Ayala 5–7, 6–1, 6–2