# 2018 US Open – Girls' doubles

Olga Danilović and Marta Kostyuk were the defending champions, but both players chose not to participate.
Top seeds Cori Gauff and Caty McNally won the title, defeating Hailey Baptiste and Dalayna Hewitt in an all-American final, 6–3, 6–2.

## Seeds

* Cori Gauff / Caty McNally (champions)
* Eléonora Molinaro / Wang Xiyu (first round)
* Alexa Noel / Naho Sato (quarterfinals)
* Elisabetta Cocciaretto / Clara Tauson (second round)
* Joanna Garland / Moyuka Uchijima (semifinals)
* Clara Burel / Diane Parry (second round)
* Camila Osorio / Gabriella Price (quarterfinals)
* Hurricane Tyra Black / Lea Ma (second round)

## Draw
### Key

* Q = Qualifier
* WC = Wild card
* LL = Lucky loser
* Alt = Alternate
* SE = Special exempt
* PR = Protected ranking
* ITF = ITF entry
* JE = Junior exempt
* w/o = Walkover
* r = Retired
* d = Defaulted
* SR = Special ranking

### Finals

| Semifinals | Semifinals | Semifinals | Semifinals | Final | Final | Final | Final |
| 1 | Cori Gauff Caty McNally | 6 | 6 | | | | |
| 5 | Joanna Garland Moyuka Uchijima | 2 | 2 | | | | |
| 5 | Joanna Garland Moyuka Uchijima | 2 | 2 | 1 | Cori Gauff Caty McNally | 6 | 6 |
| | | | | | Hailey Baptiste Dalayna Hewitt | 3 | 2 |
| WC | Chloe Beck Emma Navarro | 4 | 3 | | Hailey Baptiste Dalayna Hewitt | 3 | 2 |
| | Hailey Baptiste Dalayna Hewitt | 6 | 6 | | | | |

### Top half

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 1 | Cori Gauff Caty McNally | 6 | 6 | | | | | | | | | | | | | | |
| | Thasaporn Naklo Cody Wong Hong-yi | 1 | 3 | | 1 | C Gauff C McNally | 6 | 6 | | | | | | | | | |
| | Viktoriia Dema Georgia Drummy | 4 | 4 | | | T Pachkaleva A Tikhonova | 2 | 4 | | | | | | | | | |
| | Taisya Pachkaleva Anastasia Tikhonova | 6 | 6 | | | | | | | 1 | C Gauff C McNally | 6 | 6 | | | | |
| WC | Robin Montgomery Katrina Scott | 0 | 6 | [10] | | | | | | 7 | C Osorio G Price | 3 | 2 | | | | |
| | Melania Delai Ana Makatsaria | 6 | 3 | [5] | WC | R Montgomery K Scott | 6 | 2 | [5] | | | | | | | | |
| | Mylène Halemai Yasmine Mansouri | 5 | 7 | [6] | 7 | C Osorio G Price | 1 | 6 | [10] | | | | | | | | |
| 7 | Camila Osorio Gabriella Price | 7 | 5 | [10] | | | | | | | | | | 1 | C Gauff C McNally | 6 | 6 |
| 4 | Elisabetta Cocciaretto Clara Tauson | 6 | 6 | | | | | | | | | | | 5 | J Garland M Uchijima | 2 | 2 |
| | Adrienn Nagy María Gabriela Rivera Corado | 1 | 4 | | 4 | E Cocciaretto C Tauson | 4 | 4 | | | | | | | | | |
| | Selma Ștefania Cadar Viktoryia Kanapatskaya | 6$^4$ | 6 | [10] | | SȘ Cadar V Kanapatskaya | 6 | 6 | | | | | | | | | |
| | Kacie Harvey Emma Jackson | 7$^7$ | 1 | [8] | | | | | | | SȘ Cadar V Kanapatskaya | 2 | 2 | | | | |
| WC | Elysia Bolton Vanessa Ong | 3 | 6$^6$ | | | | | | | 5 | J Garland M Uchijima | 6 | 6 | | | | |
| | Margaryta Bilokin Sada Nahimana | 6 | 7$^8$ | | | M Bilokin S Nahimana | 3 | 2 | | | | | | | | | |
| | Mariam Dalakishvili Mananchaya Sawangkaew | 5 | 0 | | 5 | J Garland M Uchijima | 6 | 6 | | | | | | | | | |
| 5 | Joanna Garland Moyuka Uchijima | 7 | 6 | | | | | | | | | | | | | | |

### Bottom half

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 6 | Clara Burel Diane Parry | 6 | 6 | | | | | | | | | | | | | | |
| Alt | Weronika Falkowska Stefania Rogozińska Dzik | 1 | 3 | | 6 | C Burel D Parry | 5 | 5 | | | | | | | | | |
| | Leylah Annie Fernandez Manon Léonard | 4 | 7$^7$ | [8] | WC | C Beck E Navarro | 7 | 7 | | | | | | | | | |
| WC | Chloe Beck Emma Navarro | 6 | 6$^2$ | [10] | | | | | | WC | C Beck E Navarro | 6 | 6 | | | | |
| | Elizabeth Mandlik Peyton Stearns | 6 | 7$^{10}$ | | | | | | | 3 | A Noel N Sato | 1 | 3 | | | | |
| | Daria Lopatetska Oksana Selekhmeteva | 3 | 6$^8$ | | | E Mandlik P Stearns | 2 | 4 | | | | | | | | | |
| | Violet Apisah Lulu Sun | 3 | 6 | [6] | 3 | A Noel N Sato | 6 | 6 | | | | | | | | | |
| 3 | Alexa Noel Naho Sato | 6 | 3 | [10] | | | | | | | | | | WC | C Beck E Navarro | 4 | 3 |
| 8 | Hurricane Tyra Black Lea Ma | 3 | 6 | [11] | | | | | | | | | | | H Baptiste D Hewitt | 6 | 6 |
| | Kamilla Rakhimova Lenka Stará | 6 | 3 | [9] | 8 | HT Black L Ma | 3 | 6 | [13] | | | | | | | | |
| | Himari Sato Zheng Qinwen | 6 | 6 | | | H Sato Q Zheng | 6 | 2 | [15] | | | | | | | | |
| | Mana Kawamura Daria Snigur | 3 | 1 | | | | | | | | H Sato Q Zheng | 3 | 5 | | | | |
| | Kamilla Bartone Francesca Curmi | 0 | 1 | | | | | | | | H Baptiste D Hewitt | 6 | 7 | | | | |
| | Hailey Baptiste Dalayna Hewitt | 6 | 6 | | | H Baptiste D Hewitt | 6 | 7$^8$ | | | | | | | | | |
| | Natasha Subhash Katie Volynets | 6 | 5 | [10] | | N Subhash K Volynets | 4 | 6$^6$ | | | | | | | | | |
| 2 | Eléonora Molinaro Wang Xiyu | 2 | 7 | [2] | | | | | | | | | | | | | |