List of Ontario Hockey Association Junior A seasons
| OHA Junior "A" | |
|---|---|
| SOJHL | (1970-1977) | 
| OPJHL | (1972–1987) | 
| MetJHL | (1991-1998) | 
| OJHL | (1993–Present) | 
| Ontario Hockey Association | |
| Canadian Junior Hockey League | |
This is a list of Ontario Hockey Association Junior A seasons since the inception of modern Junior A hockey in 1970.