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- Haagan kauppala – became part of Helsinki in 1946
- Haapasaari – became part of Kotka in 1974
- Halikko – consolidated with Salo in 2009
- Harlu – was lost to the USSR in 1944
- Hauho – consolidated with Hämeenlinna in 2009
- Haukivuori – became part of City of Mikkeli in 2007
- Heinjoki – was lost to the USSR in 1944
- Heinolan maalaiskunta and Heinola were consolidated as Heinola in 1997
- Helsingin maalaiskunta – renamed as Vantaa in 1972, parts of the municipality had been annexed to Helsinki in 1946 with the exception of Vuosaari, which was annexed in 1966
- Himanka – consolidated with Kalajoki in 2010
- Hiitola – was lost to the USSR in 1944
- Hinnerjoki – became part of Eura in 1970
- Honkilahti – became part of Eura in 1970
- Houtskär – consolidated with Iniö, Korpo, Nagu and Pargas to form Väståboland
- Huopalahti – became part of Helsinki in 1946
- Hyvinkään maalaiskunta – became part of Hyvinkää in 1969
- Hämeenlinnan maalaiskunta – was divided in 1948 between Hämeenlinna, Renko and Vanaja
Read more about this topic: Former Municipalities Of Finland