The 1959 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 19 May until 31 May. It was the 63rd staging of the French Championships, and the second Grand Slam tennis event of 1959. Nicola Pietrangeli and Christine Truman won the singles titles.
See main article: 1959 French Championships – Men's singles. 
Nicola Pietrangeli defeated Ian Vermaak 3–6, 6–3, 6–4, 6–1
See main article: 1959 French Championships – Women's singles. 
Christine Truman defeated 
Zsuzsi Körmöczy 6–4, 7–5
Nicola Pietrangeli / Orlando Sirola defeated 
Roy Emerson / Neale Fraser 6–3, 6–2, 14–12
Sandra Reynolds / Renée Schuurman defeated 
Yola Ramírez / Rosie Reyes 2–6, 6–0, 6–1
Yola Ramírez / Billy Knight defeated Renée Schuurman / Rod Laver 6–4, 6–4