This is the 2019-20 Yamaska-Missisquoi Junior A Hockey League season.
Note: The league was combined for the 2017-18 and 2018-19 seasons from 2 separate leagues with Junior A teams and Junior B teams playing together.
- The Waterloo Maroons return to the league.
- The Acton Vale Valois and Bromont Rockies, and Granby Bulldogs withdrew.
|Bedford Bulls||Bedford||Arena de Bedford|
|Cowansville Voyageurs||Cowansville||Arena Roland-Desourdy|
|Waterloo Maroons||Waterloo, Quebec||Arena Jacques-Chagnon|
The league (along with most junior leagues in Quebec) uses what is called a Fair Play Point which is a bonus point in the standings if the team meets certain requirements in terms of avoiding penalties.
Playoffs cancelled due to COVID-19 pandemic