Sir William Carew, 5th Baronet (c. 1690–1744) was a British politician who sat in the House of Commons from 1711 to 1744.

Carew was the second son of Sir John Carew, 3rd Baronet and his third wife Mary Morice, daughter of Sir William Morice, 1st Baronet of Werrington, Devon and was baptized on 24 January 1690.

[1] He matriculated at Exeter College, Oxford on 4 September 1707 aged 18.

[3] She was an heiress, and he then had work started on Antony House in Cornwall.

[4] Carew was returned as Member of Parliament for Saltash at a by-election on 17 January 1711.