William Carnaby

William Carnaby (c. 1595–1645) was an English politician who sat in the House of Commons in 1640. He fought on the Royalist side in the English Civil War.

Carnaby was the son of William Carnaby of Farnham and Langley Northumberland and his wife Mabel Carnaby, daughter of Cuthbert Carnaby of Halton Tower. He was aged 22 at the visitation of 1615. He was knighted at Welbeck Abbey in August 1619. He came into possession of his mother's property at Halton, and also acquired the estates of Hadston from Robert Brandling.

In 1624 Carnaby was elected member of parliament for Morpeth. He was elected MP for Northumberland in 1628 and sat until 1629 when King Charles decided to rule without parliament for eleven years. He was a close friend of the Cavendish family and managed the estates of the Earl of Northumberland from 1634 to 1638. He was High Sheriff of Northumberland in 1635.

Carnaby married Jane Bindlosse daughter of Sir Robert Bindlosse.