2005–06 WOAA Senior League season

The 2005–06 WOAA Senior League season was the 16th season of the WOAA Senior AA Hockey League. The league played a 25-game regular season which began in October 2005 and concluded in January 2006. The post-season began in February 2006 and concluded in April 2006.

The Durham Thundercats won the WOAA Senior AA Hockey Championship, defeating the Elora Rocks in the final round of the playoffs.

Team changes

 * The Brussels Crusaders leave the league and fold.
 * The Drayton Icemen join the league as an expansion team.
 * The Wingham Spitfires are renamed the Wingham Bulls.

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

(2) Elora Rocks vs. (3) Shelburne Muskies
''Note: Game three played in Fergus, Ontario.

WOAA Senior "A" Hockey playoffs
The eight teams who lost in the Senior AA qualifying round participated in the Senior A playoffs.