The Roman Catholic Territorial Prelature of Klaipėda was a Roman Catholic territorial prelature which existed from 1926 to 1991 in the Lithuanian coastal area of Klaipėda (Lithuanian Klaipėdos kraštas).
[1] The prelature was vacant between 1939 and 1949 (when the Bishop of Ermland functioned as Apostolic Administrator), and after 1975.
In contrast to the rest of Lithuania, which is overwhelmingly Roman Catholic, the area of Klaipėda is, like much of East Prussia was until 1945, mostly Lutheran.
[3] By 1990, the number had doubled in all major cities due to migration (including moves and deportation after the Second World War) of the former populations, and immigration of Catholic Lithuanians.
After Lithuania's second independence in 1991, the territorial prelature was disestablished, and became part of Telšiai diocese.