Akaa (Ackas) – was divided in 1946 between Toijala, Kylmäkoski, Sääksmäki and Viiala. The name was re-introduced in 2007 when the municipalities of Toijala and Viiala were consolidated.
Helsingin maalaiskunta (Helsinge landskommun) – renamed as Vantaa (Swedish: Vanda) in 1972, parts of the municipality had been annexed to Helsinki in 1946 with the exception of Vuosaari (Swedish: Nordsjö), which was annexed in 1966
Himanka (Swedish: Himango) – consolidated with Kalajoki in 2010
Jääski – was partially lost to the USSR in 1944, the rest of the municipality was incorporated into Imatra, Joutseno and Ruokolahti (Swedish: Ruokolax) in 1948