| Champ: | Roger Federer |
| Runner: |  Irakli Labadze |
| Score: | 6–4, 6–4 |
| Draw: | 64 (8) |
| Seeds: | 16 |
| Before Name: | Wimbledon Championships – Boys' singles |
| After Name: | Wimbledon Championships – Boys' singles |
See main article: 1998 Wimbledon Championships.
Roger Federer defeated Irakli Labadze in the final, 6–4, 6–4 to win the boys' singles tennis title at the 1998 Wimbledon Championships.[1] It was Federer's fourth juniors singles title. He would go on to win a record eight senior Wimbledon titles between 2003 and 2017.[2]
Wesley Whitehouse was the reigning champion, but turned 18 years old during the season and, therefore, was ineligible to compete in juniors.
See also: 1 and 1. 
Julien Jeanpierre (quarterfinals)
See also: 2 and 4. Fernando González (first round)
See also: 3 and 2. Cheng Wei-jen (third round)
See also: 4 and 3. 
Robin Vik (second round)
See also: 5 and 2. Roger Federer (champion)
See also: 6 and 4. 
Flávio Saretta (quarterfinals)
See also: 7 and 3. Irakli Labadze (final)
See also: 8 and 1. Ricardo Mello (first round)
See also: 9 and 4. 
Olivier Rochus (first round)
See also: 10 and 3. 
José de Armas (quarterfinals)
See also: 11 and 1. 
Taylor Dent (second round)
See also: 12 and 3. 
Aisam-ul-Haq Qureshi (third round)
See also: 13 and 1. 
Jacob Adaktusson (first round)
See also: 14 and 2. 
Valentin Sanon (second round)
See also: 15 and 2. 
Edgardo Massa (second round)
See also: 16 and 4. 
Balázs Veress (first round)