William Caldwell (Royal Navy officer)

Rear Admiral William Caldwell (died 1718) was a Royal Navy officer who briefly served as Commander-in-Chief, The Thames from 12 November 1717 to 1 December 1717.

Naval career
Promoted to captain in January 1694, Caldwell commanded, successively, the sixth-rate HMS Lizard (1694), the sixth-rate HMS Lyme (1695), the fourth-rate HMS Anglesea (1696), the fourth-rate HMS Crown (1654), the forth-rate HMS Advice (1650), the third-rate HMS Swiftsure (1673) and the third-rate HMS Torbay (1693). He saw action at the battle of Málaga in August 1704 and briefly served as Commander-in-Chief, The Thames from 12 November 1717 to 1 December 1717.

Caldwell married Catherine Nanfan, daughter of Bridges Nanfan of Birtsmorton Court in 1702. After his death in 1718, a memorial to Caldwell was erected in the church at Birtsmorton in Worcestershire.