2019–20 WOAA Senior League season

The 2019–20 WOAA Senior League season was the 30th season of the WOAA Senior AA Hockey League. The league played a 22-game regular season which began in October 2019 and concluded in January 2020. The post-season began in February 2020, however, the playoffs would be cancelled due to the COVID-19 pandemic.

Team changes

 * The Mapleton-Minto 81's are renamed the Minto 81's and move all their home games to the Palmerston & District Community Centre.
 * The Huron East Centenaires are rebranded as the Seaforth Centenaires.

Final standings
Note: GP = Games played; W = Wins; L= Losses; OTL = Overtime losses; GF = Goals for; GA = Goals against; Pts = Points; Green shade = Clinched playoff spot

Scoring leaders
Note: GP = Games played; G = Goals; A = Assists; Pts = Points; PIM = Penalty minutes

Playoffs
On Friday, March 13th, the WOAA Senior Hockey League suspended operations until further notice due to health concerns relating to the COVID-19 pandemic.

On Wednesday, March 18th, the remainder of the playoffs was cancelled.

WOAA Senior "AA" Hockey playoffs
The top eight teams qualify for the WOAA Senior "AA" Hockey playoffs. Each series is a best-of-seven.

WOAA Senior "A" Hockey playoffs
The bottom six teams qualified for the WOAA Senior "A" Hockey playoffs.