William Kingsmill (died 1618) was an English landowner.
He was a son of William Kingsmill (died 1592) and Bridget Raleigh (died 1607), a daughter of George Raleigh.
King James and Anne of Denmark stayed at Sydmonton Court in August 1603.
[3] Anne of Denmark stayed in August 1611.
Their children included:[5] Anne, Lady Kingsmill wrote to the Earl of Salisbury on 14 June 1608, thanking him for favours shown to herself and her son.