William Selby (died 1638)

Sir William Selby (died 1638) was an English politician who sat in the House of Commons from 1597 to 1601.

Selby was the son of Sir John Selby of Twizell. He was educated at Peterhouse, Cambridge in 1573. In 1597, he was elected Member of Parliament for Northumberland. He was re-elected MP for Northumberland in 1601. He was knighted in 1603 and was High Sheriff of Northumberland in the same year. He was Sheriff of Northumberland again in 1606. In 1611 he succeeded to the estates in Kent of his uncle Sir William Selby. He was gentleman porter of Berwick in succession to his father.

Selby married Dorothy Bonham.