This is a list of people who have served as Lord Lieutenant of Cambridgeshire. The title Lord Lieutenant is given to the British monarch's personal representative in the counties of the United Kingdom. The Lord Lieutenant is supported by a Vice Lord Lieutenant and Deputy Lieutenants which he or she appoints. Since 1715, all Lord Lieutenants have also been Custos Rotulorum of Cambridgeshire.
Incorporating the liberty of Isle of Ely, a county palatine from 1107 to 1535/6, declared a division of Cambridgeshire in 1837 when the secular powers of the Bishop of Ely ended. For the Soke of Peterborough to 1965, see Lord Lieutenant of Northamptonshire and for Huntingdonshire during this period, Lord Lieutenant of Huntingdonshire.
The Lieutenancy became that of Cambridgeshire and Isle of Ely on 1 April 1965, when that administrative county was formed. For Huntingdon and Peterborough, see the separate Lord Lieutenant of Huntingdon and Peterborough.
On 1 April 1974, the new non-metropolitan county of Cambridgeshire was formed from Cambridgeshire and Isle of Ely and Huntingdon and Peterborough. On 1 April 1998, the city of Peterborough ceded from Cambridgeshire as a unitary authority, but it continues to form part of that county for ceremonial purposes.