| Champ: |  Kirsten Flipkens |
| Runner: |  Anna Chakvetadze |
| Score: | 6–4, 3–6, 6–3 |
| Draw: | 64 (8 / 8) |
| Seeds: | 16 |
| Before Name: | Wimbledon Championships – Girls' singles |
| After Name: | Wimbledon Championships – Girls' singles |
See main article: 2003 Wimbledon Championships. Vera Dushevina was the defending champion but did not complete in the Juniors this year.
Kirsten Flipkens defeated Anna Chakvetadze in the final, 6–4, 3–6, 6–3 to win the girls' singles tennis title at the 2003 Wimbledon Championships.[1]
See also: 1 and 1. 
Sunitha Rao (quarterfinals)
See also: 2 and 4. Carly Gullickson (quarterfinals)
See also: 3 and 3. Michaëlla Krajicek (third round)
See also: 4 and 2. 
Jarmila Gajdošová (semifinals)
See also: 5 and 1. Alisa Kleybanova (second round)
See also: 6 and 4. 
Kateřina Böhmová (first round)
See also: 7 and 3. Ally Baker (quarterfinals)
See also: 8 and 2. 
Ryōko Fuda (first round)
See also: 9 and 3. Vojislava Lukić (second round)
See also: 10 and 1. Andrea Hlaváčková (second round)
See also: 11 and 4. 
Emma Laine (semifinals)
See also: 12 and 3. 
Tatiana Golovin (quarterfinals)
See also: 13 and 4. 
Viktoriya Kutuzova (second round)
See also: 14 and 2. 
Casey Dellacqua (second round)
See also: 15 and 3. 
Marta Domachowska (first round)
See also: 16 and 1. 
Sania Mirza (second round)