Weymouth and Portland was a local government district with borough status in Dorset, England from 1974 to 2019.

It consisted of the resort of Weymouth and the Isle of Portland, and includes the areas of Wyke Regis, Preston, Melcombe Regis, Upwey, Broadwey, Southill, Nottington, Westham, Radipole, Chiswell, Castletown, Fortuneswell, Weston, Southwell and Easton; the latter six being on the Isle of Portland.

Weymouth and Portland's waters have also been credited by the Royal Yachting Association as the best in Northern Europe.

[7] Weymouth and Portland and Purbeck districts were in the South Dorset parliamentary constituency, created in 1885.

[8] The borough and its council was abolished on 1 April 2019 and, together with the other 4 districts outside the greater Bournemouth area, formed a new Dorset unitary authority.