| Indonesia U-21 | |
| Badge: | 2024_Indonesia_Football_National_Team_Badge.png |
| Badge Size: | 160px |
| Fifa Trigramme: | IDN |
| Nickname: | Garuda Muda (The Young Garuda) |
| Association: | PSSI |
| Confederation: | AFC (Asia) |
| Sub-Confederation: | AFF (Southeast Asia) |
| First Game: |  Indonesia 10–0 (Bandar Seri Begawan, Brunei; August 16, 2002) |
| Largest Win: | Indonesia 10–0 (Bandar Seri Begawan, Brunei; August 16, 2002) |
| Largest Loss: | 4–0 Indonesia (Alcúdia, Spain; August 11, 2014) |
Indonesia national under-21 football team represents Indonesia in association football and has players aged 21 years old or under.
| Year | Head coaches | Tournaments | |
|---|---|---|---|
| 2002 | Bambang Nurdiansyah | 2002 Hassanal Bolkiah Trophy – Champions | |
| 2005 | Zein Al Hadad | 2005 Hassanal Bolkiah Trophy – Group stage | |
| 2008 | Bambang Nurdiansyah | 2008 Indonesia Independence Cup - Third place | |
| 2012 | Widodo C. Putro | 2012 Hassanal Bolkiah Trophy – Runners-up | |
| 2014 | Rudy William Keltjes | 2014 COTIF – Group stage |
| Year | Round | Position | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Champions | 1st | 6 | 6 | 0 | 0 | 17 | 0 | |||
| Group stage | 8th | 4 | 1 | 1 | 2 | 3 | 4 | |||
| Did not participate | ||||||||||
| Runners-up | 2nd | 6 | 3 | 1 | 2 | 9 | 6 | |||
| 2018 | Did not participate | |||||||||
| Total | Champions | 1st | 16 | 10 | 2 | 4 | 29 | 10 | ||
| Year | Tournament | Round | Position | |||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 2008 | Indonesia Independence Cup | Third place | 3rd | 4 | 2 | 0 | 2 | 4 | 5 | |
| 2014 |  COTIF | Group stage | 10th | 4 | 0 | 0 | 4 | 0 | 8 |