1990 National Soccer League Season
League commissioner: Rocco LoFranco
Review of the season
In what the league called its 67th season they operated with nine teams in its first division and seven teams in the second division. The league decided to operate with a promotion-relegation system.
London City paid the London Marconi club $1 for their franchise rights, making a comeback in the NSL. Oshawa Italia was another new club in the National Soccer League.
Friuli joined the NSL Second Division. North York Strikers won the second division championship.
Before the season started commissioner Rocco LoFranco predicted that Windsor Wheels, Toronto Croatia, First Portuguese and St. Catharines Roma would be the strongest clubs in the First Division.
First Portuguese won the league championship by beating Panhellenic 3-0 on September 12, 1990.
After the season Panhellenic, First Portuguese, America United and Oshawa Italia dropped out from the league.
First Division teams (9):
America United, First Portuguese, London City, Oshawa Italia, Panhellenic, St. Catharines Roma, Toronto Croatia, Toronto Italia, Windsor Wheels
Second Division teams (7):
Brazil ’87, Friuli, Hamilton, North York Strikers, Toronto Jets, Toronto Virtus, Woodbridge Azzurri
Final standings
| GP | W | L | T | GF | GA | Pts | |
| First Portuguese | 16 | 11 | 3 | 2 | 29 | 6 | 24 |
| Toronto Italia | 16 | 10 | 4 | 2 | 38 | 19 | 22 |
| St. Catharines Roma | 16 | 9 | 4 | 3 | 28 | 16 | 21 |
| Toronto Croatia | 16 | 7 | 2 | 7 | 23 | 11 | 21 |
| Panhellenic | 16 | 7 | 6 | 3 | 23 | 25 | 17 |
| America United | 16 | 5 | 6 | 5 | 18 | 23 | 15 |
| Windsor Wheels | 15 | 4 | 8 | 3 | 21 | 29 | 11 |
| London City | 16 | 1 | 11 | 4 | 11 | 36 | 6 |
| Oshawa Italia | 15 | 1 | 11 | 3 | 13 | 37 | 5 |
First Portuguese won the 1990 National Soccer League Championship.
National Soccer League Cup
St. Catharine’s Roma won 1990 NSL Cup.
Champions Cup
September 29, 1990 Toronto
First Portuguese 4
Montreal St. Leonard 2