Foot.dk: Fodboldstatistik - Finnish club database for clubs that have participated in the top tier.
Les-Sports.info - Season by season records of Finnish football clubs.
Transfermarkt - Overview of Finnish club details for the top division.
Veikkausliiga - Clubs participating in the Finnish Veikkausliga including a useful search facility.
Weltfussballarchiv - Finnish club search.
Finnish Wikipedia - Detailed listing of amateur and professional football clubs in Finland.
English Wikipedia - Listing of 160 Finnish football clubs.