The 1973 Mestaruussarja, the premier division of Finnish football, was contested by 12 teams, and HJK Helsinki won the championship.
League standings
Results
Attendances
No. Club Average 1 HJK 3,781 2 OTP 3,687 3 Reipas 2,757 4 KPV 2,729 5 KPT 2,697 6 KuPS 2,608 7 TPS 2,394 8 MP 2,328 9 Ponnistus 2,196 10 Lahti-69 1,300 11 IKissat 1,144 12 TaPa 797
Source:https://www.european-football-statistics.co.uk/attn/archive/fin/avefin73.htm
References
Finland - List of final tables (RSSSF)