Sir Henry Slingsby (1560 - 17 December 1634) was an English landowner and politician who sat in the House of Commons between 1601 and 1624. Slingsby was the fourth, but ultimately eldest surviving son of Sir Francis Slingsby of Scriven and his wife Mary Percy, sister of Henry Percy, 8th Earl of Northumberland. He held a number of offices including feodary for the Duchy of Lancaster and feodary of Tickhill. He was receiver of Pontefract Castle, and was receiver surveyor and collector of Knaresborough and Wakefield in 1588. He was janitor and deputy keeper of Knaresborough Castle and bailiff and coroner within the liberty of Knaresborough. He was chief forester of Knaresborough and Wharfdale and was custodian of Bilton park in about 1600. He succeeded to the estates of his father in 1600.