| Champ: |  Noppawan Lertcheewakarn |
| Runner: |  Kristina Mladenovic |
| Score: | 3–6, 6–3, 6–1 |
| Draw: | 64 (8 / 7) |
| Seeds: | 16 |
| Before Name: | Wimbledon Championships – Girls' singles |
| After Name: | Wimbledon Championships – Girls' singles |
See main article: 2009 Wimbledon Championships. Laura Robson was the defending champion but lost in the third round to Quirine Lemoine.
Noppawan Lertcheewakarn defeated Kristina Mladenovic in the final, 3–6, 6–3, 6–1 to win the girls' singles tennis title at the 2009 Wimbledon Championships.[1]
See also: 1 and 1. Kristina Mladenovic (final)
See also: 2 and 4. 
Laura Robson (third round)
See also: 3 and 2. Ana Bogdan (second round)
See also: 4 and 3. Noppawan Lertcheewakarn (champion)
See also: 5 and 3. 
Olivia Rogowska (first round)
See also: 6 and 4. 
Tímea Babos (semifinals)
See also: 7 and 1. 
Sloane Stephens (quarterfinals)
See also: 8 and 2. Ajla Tomljanović (first round)
See also: 9 and 4. Christina McHale (first round)
See also: 10 and 1. Camila Silva (third round)
See also: 11 and 3. Silvia Njirić (quarterfinals)
See also: 12 and 2. Heather Watson (first round)
See also: 13 and 3. 
Tamaryn Hendler (third round)
See also: 14 and 4. Chanel Simmonds (second round)
See also: 15 and 1. 
Daria Gavrilova (second round)
See also: 16 and 2. 
Ulrikke Eikeri (first round)