| Herbert Watkin Williams-Wynn | |
| Office: | Member of Parliament for Montgomeryshire |
| Term Start: | 11 October 1850 |
| Term End: | 22 June 1862 |
| Predecessor: | Charles Williams-Wynn |
| Successor: | Charles Williams-Wynn |
| Birth Date: | 29 April 1822 |
| Nationality: | British |
| Party: | Conservative |
Herbert Watkin Williams-Wynn (29 April 1822 – 22 June 1862)[1] was a British Conservative politician.
Williams-Wynn was elected MP for Montgomeryshire at a by-election in 1850—caused by the death of Charles Williams-Wynn—and held the seat until his own death in 1862.[2]