2016-17 ACH Season

This is the 2016-17 Allan Cup Hockey Season.  This is the league's 6th season under this name and 26th season overall. The league was previously known as Major League Hockey from 2004 to 2011, Ontario Senior AAA Hockey League from 2003 to 2004 and Southwestern Senior A Hockey League from 1990 to 2003.

Membership changes

 * After ceasing operations the previous October, the Norwood Vipers do not return

Standings
note: Thorold finished ahead of Brantford based on first tie breaker; wins 13-12.

Format
The top five teams qualify for the playoffs. The fourth place team plays the fifth place team in a best-of-three quarterfinal series with the winner becoming the 4th seed. The semifinal and final round will still be best-of-seven. The playoff champion traditionally advances to the Renwick Cup against the Hockey Northwestern Ontario representative in a best-of-three series to determine the Ontario representative at the Allan Cup. This series will not be needed as there are no other Senior AAA teams in the province; so now the Allan Cup Hockey champion will advance directly to the 2017 Allan Cup.

Quarterfinal

 * Dundas Real McCoys defeated Brantford Blast 2 games to none

Semifinals

 * Stoney Creek Generals defeated Dundas Real McCoys 4 games to none
 * Whitby Dunlops defeated Thorold Athletics 4 games to none

Final

 * Stoney Creek Generals defeated Whitby Dunlops 4 games to 1