This is the 2017-18 WOAA Senior AA Hockey League season. This was the league's 28th season at the senior level and the 8th season under this name. The league was previously known as the WOAA Senior Hockey League from 1990 to 2010.
- The Mapleton-Minto 81's take a leave of absence from the league.
|Mapleton-Minto 81's||Palmerston, Harriston, Drayton||Palmerston & District Community Centre, Harriston Arena, PMD Drayton Arena|
|Saugeen Shores Winterhawks||20||10||9||0||1||99||57||21|
|Milverton Four Wheel Drives||20||9||11||0||0||71||100||18|
|Huron East Centenaires||20||7||10||0||3||88||110||17|
|Shallow Lake Crushers||20||7||13||0||0||58||118||14|
note: The Petrolia Squires were stripped of 6 points (3 wins) as a result of using an unsigned player during the season. The problem was apparently due to an email missing the player in question's playing card and by the time the decision was made Petrolia could not appeal the decision (which was issued January 19)
The top eight team qualify for the senior AA playoffs. All Senior AA series are best-of-seven. The balance of the teams play in the Senior A playoffs. 9th, 10th, and 11th get a bye,12 vs 13 in a one weekend best 2 of 3, winners advance to Senior A semifinals. The AA champion is awarded the Secure Insurance Solutions Trophy.
Senior AA QuarterfinalsEdit
- Clinton Radars defeated Huron East Centenaires 4 games to none
- Ripley Wolves defeated Milverton Four Wheel Drives 4 games to 1
- Durham Thundercats defeated Saugeen Shores Winterhawks 4 games to none
- Tillsonburg Thunder defeated 4 Shelburne Muskies games to none
Senior A QuarterfinalsEdit
Senior AA SemifinalsEdit
- Clinton Radars defeated Tillsonburg Thunder 4 games to 2
- Durham Thundercats defeated Ripley Wolves 4 games to 1
Senior A SemifinalsEdit
- Petrolia Squires defeated Lucknow Lancers 4 games to 1
- Tavistock Royals defeated Shallow Lake Crushers 4 games to1