Treaty Six Hockey League was a Senior Hockey League that is based in Saskatchewan and played from 2004-05 to 2006-07. The league was established on November 1, 2004 with six planned teams. The league added Muskeg Lake and Onion Lake shortly after. The league lost 5 of 8 members prior to what would be its' final season in 2006-07. The league also added 4 new members for that season.