| Champ: |  Caty McNally Iga Świątek |
| Runner: |  Yuki Naito Naho Sato |
| Score: | 6–2, 7–5 |
See main article: 2018 French Open.
Caty McNally and Iga Świątek won the girls' doubles tennis title at the 2018 French Open, defeating Yuki Naito and Naho Sato in the final, 6–2, 7–5. They saved three match points en route to the title, in the second round against Camila Osorio and Wang Xiyu.
Bianca Andreescu and Carson Branstine were the defending champions, but chose not to participate.