| William Longworth Dames | |
| Birth Date: | 2 March 1806 |
| Death Date: | 20 February 1868 |
| Allegiance: |  United Kingdom |
| Branch: | British Army |
| Rank: | Lieutenant-General |
| Battles: | Indian Rebellion |
Lieutenant-General William Longworth Dames (2 March 1806 – 20 February 1868) was a British Army officer who served as colonel of the 5th (Northumberland Fusiliers) Regiment of Foot.
Dames was commissioned into the 66th Regiment of Foot on 26 July 1826[1] and promoted to lieutenant on 24 November 1828. Promoted to lieutenant-colonel on 1 November 1842, he commanded the British forces during the siege of Azimghur in April 1858 during the Indian Rebellion. He became colonel of the 5th (Northumberland Fusiliers) Regiment of Foot in 1865.