William Cavendish, 1st Duke of Newcastle, English soldier and politician, Lord Lieutenant of Nottinghamshire (born 1592)

William Cavendish, 1st Duke of Newcastle upon Tyne, KG, KB, PC, who after 1665 styled himself as Prince William Cavendish, was an English courtier and supporter of the arts. He was a renowned horse breeder, as well as being patron of the playwright Ben Jonson and the intellectual group known as the Welbeck Circle.

This is a list of people who have served as Lord Lieutenant of Nottinghamshire. Since 1694, all Lords Lieutenant have also been Custos Rotulorum of Nottinghamshire.