Referees
Referees included Art King (Toronto), Hugh McLean (Guelph, Ontario) and Stan Tait (Montreal, Quebec).
Review of the season
The opening game of the 1966 Eastern Canada Professional Soccer League season was played in Montreal on Sunday May 8. Montreal International and Toronto Inter-Roma played to a 1-1 tie in front of 2,000 fans.
After this season the league folded. Toronto Italia Falcons joined the National Professional Soccer League. Toronto Inter-Roma and Hamilton Primos joined the semi-professional National Soccer League for the 1967 NSL season.
Results and standings
| GP | W | T | L | GF | GA | Pts | |
| Toronto Italia-Falcons | 24 | 21 | 2 | 1 | 57 | 16 | 44 |
| Toronto Inter-Roma | 24 | 11 | 4 | 9 | 35 | 38 | 26 |
| Hamilton Primos | 24 | 5 | 4 | 14 | 27 | 42 | 14 |
| Montreal International | 24 | 3 | 6 | 15 | 16 | 39 | 12 |
Leading goalscorers
| Name | Team | Goals |
| Carlos Metidieri | Toronto Italia | 17 |
Semifinals
August 31, 1966 Varsity Stadium, Toronto
Attendance: 200
Toronto Inter-Roma 3 (Jorge Bentivegna, Dave Demaine 2 pens.)
Hamilton Primos 1 (Bob Williams)
President’s Cup
September 4, 1966 Varsity Stadium, Toronto
Attendance: 2,075
Toronto Inter-Roma 1 (Ron Clayton)
Toronto Italia-Falcons 0
September 7, 1966 Varsity Stadium, Toronto
Attendance: 2,043
Toronto Inter-Roma 2 (Frank Rosati 2)
Toronto Italia-Falcons 0
Inter-Roma won the best-of-three games series 2-0
Exhibition game
May 25, 1966 Civic Stadium, Hamilton
Hamilton Primos 0
Glasgow Celtic 11
Match report
August 30, 1966 Varsity Stadium, Toronto
Toronto Italia 0
Benfica (Portugal) 1
Match report
Match reports
| Date | Home | Away |
| 12/06/1966 | Montreal 0 | Hamilton Primos 0 |
| 16/06/1966 | Hamilton Primos 0 | Inter-Roma 1 |
| 18/06/1966 | ||
| 09/07/1966 | Inter-Roma 2 | Italia Falcons 4 |
| 16/07/1966 | Italia Falcons 3 | Hamilton Primo 2 |
| 17/07/1966 | Montreal 0 | Inter-Roma 1 |
| 17/07/1966 | Hamilton Primos 1 | Italia Falcons 3 |
National Soccer League 