1970 French Open – Mixed doubles

Marty Riessen and Margaret Court were the defending champions, but Marty Riessen did not compete this year. Margaret Court teamed up with Željko Franulović and lost in semifinals to Bob Hewitt and Billie Jean King.

Bob Hewitt and Billie Jean King won in the final 3–6, 6–4, 6–2 against Jean-Claude Barclay and Françoise Dürr.

Seeds
• # Bob Hewitt / 🇺🇸 Billie Jean King (champions)

• #🇫🇷 Jean-Claude Barclay / 🇫🇷 Françoise Dürr (final)

• #🇷🇴 Ilie Năstase / 🇺🇸 Rosie Casals (semifinals)

• # Željko Franulović / 🇦🇺 Margaret Court (semifinals)

• # Alex Metreveli / Olga Morozova (quarterfinals)

• #🇷🇴 Ion Țiriac / 🇬🇧 Virginia Wade (quarterfinals)

• #🇦🇺 Ray Ruffels / 🇦🇺 Karen Krantzcke (third round)

• #🇺🇸 Jim McManus / 🇦🇺 Judy Dalton (quarterfinals)