Cumberland is a unitary authority area in the ceremonial county of Cumbria, England. It covers the north-western part of Cumbria, including the west of the Lake District. The city of Carlisle is the largest settlement and the administrative centre. The unitary authority area covers the majority of the area of the historic county of Cumberland, from which it takes its name, but does not include the area around Penrith.
The unitary authority area was formed on 1 April 2023 during a local government restructuring which abolished the non-metropolitan county of Cumbria and its six districts. Cumberland has the same area as the former districts of Carlisle, Allerdale, and Copeland, being constituted as a non-metropolitan county and coterminous non-metropolitan district with the same area as the former districts. The three remaining districts of Cumbria were merged into Westmorland and Furness. It remains part of Cumbria for ceremonial purposes. Prior to the local government reforms of 1974, which created Cumbria, Carlisle was a county borough and the remainder of the area was within the administrative county of Cumberland.