U
- Ullava – consolidated with Kokkola in 2009
- Uudenkaupungin maalaiskunta – became part of the City of Uusikaupunki in 1969
- Uukuniemi – consolidated with Parikkala and Saari to form Parikkala in 2005
- Uusikirkko – was lost to the USSR in 1944
- Uusikirkko Tl – renamed as Kalanti in 1936, became part of the City of Uusikaupunki in 1993
- Uskela – became part of Salo in 1967
Read more about this topic: Former Municipalities Of Finland