SM-Sarja was the top level of ice hockey in Finland from 1928 to 1975. SM-sarja is a common abbreviation for Suomen mestaruussarja, "Finnish Championship Series". There was variable number of teams playing for the Finnish championship during the time of SM-sarja. The lowest number of participating teams was during the 1935 SM-sarja season when there was 3 teams. The most common number of participating teams was 12.