This is a list of seasons for the Quebec-Ontario Athletic Association Men's Hockey League and its predecessor, the Canadian Intercollegiate Athletic Union (CIAU). The CIAU refers to two things. First, the CIAU refers to the original regional university sports organization in Ontario and Quebec (sometimes called "CIAU Central"), which was ultimately replaced by the Quebec-Ontario Athletic Association (QOAA) in 1955. The links vary as to whether the hockey league operated under the QOAA banner as early as 1953. This list includes both in any event.