R
- Räisälä – was lost to the USSR in 1944
- Rantsila – consolidated with Kestilä, Piippola and Pulkkila to form Siikalatva in 2009
- Rauman maalaiskunta – became part of the City of Rauma in 1993
- Rautio – became part of Kalajoki in 1973
- Rautu – was lost to the USSR in 1944
- Renko – consolidated with Hämeenlinna in 2009
- Replot – became part of Korsholm in 1973
- Revonlahti – consolidated with Paavola to form Ruukki in 1973
- Riistavesi – became part of the City of Kuopio in 1973
- Rovaniemen maalaiskunta – was consolidated with the City of Rovaniemi to form the City of Rovaniemi in 2006
- Ruotsinpyhtää – consolidated with Loviisa in 2010
- Ruskeala – was lost to the USSR
- Ruukki – became part of Siikajoki in 2007
- Rymättylä – consolidated with Naantali in 2009
Read more about this topic: Former Municipalities Of Finland