| Tournament details | |
|---|---|
| Host country | Guatemala |
| Dates | 29 April – 11 May |
| Teams | 12 |
| Final positions | |
| Champions |  Mexico (9th title) |
| Runners-up |  Trinidad and Tobago |
| Third place |  United States |
| Fourth place |  Guatemala |
The 1990 CONCACAF Under-20 Championship was held in Guatemala. It also served as qualification for the 1991 FIFA World Youth Championship.
| Team 1 | Agg. | Team 2 | 1st leg | 2nd leg |
|---|---|---|---|---|
Costa Rica 
|
9–0 |  Belize
|
1–0 | 8–0 |
Other qualification matches may have been played.
The following teams entered the tournament:
| Region | Team(s) |
|---|---|
| Caribbean (CFU) |  Barbados  Bermuda Grenada Suriname Trinidad and Tobago
|
| Central America (UNCAF) | Costa Rica El Salvador Guatemala (host) Honduras
|
| North America (NAFU) |  Canada Mexico United States
|
| Teams | Pld | W | D | L | GF | GA | GD | Pts |
|---|---|---|---|---|---|---|---|---|
| Guatemala
|
2 | 2 | 0 | 0 | 5 | 1 | +4 | 4 |
| Suriname
|
2 | 1 | 0 | 1 | 2 | 4 | –2 | 2 |
| Bermuda
|
2 | 0 | 0 | 2 | 2 | 4 | –2 | 0 |
| 29 April | Bermuda
|
1–2 | Suriname
|
| 1 May | Guatemala
|
3–0 | Suriname
|
| 3 May | Guatemala
|
2–1 | Bermuda
|
| Teams | Pld | W | D | L | GF | GA | GD | Pts |
|---|---|---|---|---|---|---|---|---|
| Trinidad and Tobago
|
2 | 1 | 1 | 0 | 3 | 1 | +2 | 3 |
| Canada
|
2 | 1 | 1 | 0 | 1 | 0 | +1 | 3 |
| El Salvador
|
2 | 0 | 0 | 2 | 1 | 4 | –3 | 0 |
| 30 April | Canada
|
0–0 | Trinidad and Tobago
|
| 2 May | El Salvador
|
1–3 | Trinidad and Tobago
|
| 4 May | El Salvador
|
0–1 | Canada
|
| Teams | Pld | W | D | L | GF | GA | GD | Pts |
|---|---|---|---|---|---|---|---|---|
| United States
|
2 | 2 | 0 | 0 | 5 | 0 | +5 | 4 |
| Costa Rica
|
2 | 1 | 0 | 1 | 2 | 3 | –1 | 2 |
| Barbados
|
2 | 0 | 0 | 2 | 1 | 5 | –4 | 0 |
| 29 April | United States
|
2–0 | Costa Rica
|
| 1 May | Costa Rica
|
2–1 | Barbados
|
| 3 May | Barbados
|
0–3 | United States
|
| Teams | Pld | W | D | L | GF | GA | GD | Pts |
|---|---|---|---|---|---|---|---|---|
| Mexico
|
2 | 2 | 0 | 0 | 9 | 0 | +9 | 4 |
| Honduras
|
2 | 1 | 0 | 1 | 3 | 4 | –1 | 2 |
| Grenada
|
2 | 0 | 0 | 2 | 1 | 9 | –8 | 0 |
| 30 April | Mexico
|
6–0 | Grenada
|
| 2 May | Honduras
|
3–1 | Grenada
|
| 4 May | Honduras
|
0–3 | Mexico
|
| Teams | Pld | W | D | L | GF | GA | GD | Pts |
|---|---|---|---|---|---|---|---|---|
| Mexico
|
3 | 3 | 0 | 0 | 8 | 2 | +6 | 6 |
| Trinidad and Tobago
|
3 | 2 | 0 | 1 | 4 | 3 | +1 | 4 |
| United States
|
3 | 1 | 0 | 2 | 5 | 5 | 0 | 2 |
| Guatemala
|
3 | 0 | 0 | 3 | 2 | 9 | –7 | 0 |
| 5 May | Guatemala
|
1–4 | United States
|
| 6 May | Mexico
|
2–1 | Trinidad and Tobago
|
| 8 May | United States
|
0–1 | Trinidad and Tobago
|
| 9 May | Guatemala
|
0–3 | Mexico
|
| 11 May | Guatemala
|
1–2 | Trinidad and Tobago
|
| United States
|
1–3 | Mexico
|
| 1990 CONCACAF U-20 Championship |
|---|
 Mexico Ninth title |
The two best performing teams qualified for the 1991 FIFA World Youth Championship.