Adolf Plennis (6 August 1894 – 12 May 1949) was a Memel German politician.
Plennis was born Daugallen-Peter on 6 August 1894.[1] He worked as an agricultural worker and lived in Truschellen.[1][2][3] He was also an organizer of the Agricultural Workers Union of the Memel Territory.[1]
Plennis was elected to the first Memel Territory Assembly in 1925, being the third candidate on the list of the Social Democratic Party of the Memel Territory (SDPM).[1][2][3] He did not run for re-election in 1927, and after leaving the Assembly he worked as a driver for the Memel Dampfboot publishing company.[1]
After 1945 Plenning lived in East Germany.[1] He died in Fürstenwalde/Spree on 12 May 1949.[1]