| William Caldwell | |
| Death Date: | 1718 |
| Serviceyears: | 1694 to 1718 |
| Rank: | Rear Admiral |
| Branch: | Royal Navy |
| Commands: | Commander-in-Chief, The Thames |
| Battles: | War of the Spanish Succession |
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.
Promoted to captain in January 1694, Caldwell commanded, successively, the sixth-rate, the sixth-rate, the fourth-rate, the fourth-rate, the forth-rate, the third-rate and the third-rate . 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.[1]
Caldwell married Catherine Nanfan, daughter of Bridges Nanfan of Birtsmorton Court in 1702.[2] After his death in 1718, a memorial to Caldwell was erected in the church at Birtsmorton in Worcestershire.[3]