| USTA Girls 18s National Championships | |
|---|---|
| Tournament information | |
| Founded | 1918 |
| Location | San Diego United States |
| Venue | Barnes Tennis Center |
| Surface | Hard court - outdoors |
| Draw | 256S / / 128D |
| Website | [1] |
| Current champions (2021) | |
| Singles |  Ashlyn Krueger |
| Doubles | Ashlyn Krueger Robin Montgomery |
The USTA Girls 18s National Championships is a prestigious junior tennis tournament held on outdoor hard courts in San Diego. It is the highest level domestic junior tournament hosted by the USTA. The tournament is contested in early August just before the US Open (tennis). The winners of the singles and doubles events are awarded with a wild card into the US Open.