Adolf Plennis (6 August 1894 – 12 May 1949) was a Memel German politician.
[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.