| Champ: |  Ekaterina Makarova Elena Vesnina |
| Runner: |  Tímea Babos Kristina Mladenovic |
| Score: | 2–6, 6–4, [10–8] |
See main article: 2018 Mutua Madrid Open.
Latisha Chan and Martina Hingis were the defending champions,[1] but Hingis retired from professional tennis at the end of 2017. Chan played alongside Bethanie Mattek-Sands, but lost in the quarterfinals to Andrea Sestini Hlaváčková and Barbora Strýcová.
Ekaterina Makarova and Elena Vesnina won the title, defeating Tímea Babos and Kristina Mladenovic in the final, 2–6, 6–4, [10–8].
The top four seeds received a bye into the second round.