The 1931 season was the second completed season of Finnish Football League Championship, known as the Mestaruussarja. HIFK Helsinki is the defending champion.
The 1931 Mestaruussarja was contested by 8 teams, with HIFK Helsinki winning the championship which was also known as the A-sarja [âÂÂA-SeriesâÂÂ]. HJK Helsinki and ViPS Viipuri were relegated to the second tier which was known as the B-sarja [âÂÂB-SeriesâÂÂ].
In 1930, there were 8 participants in the Mestaruussarja: