William Southwell
| Member of the Irish House of Commons | |
|---|---|
| Constituency | Kinsale (1703–1713), Castlemartyr (1713–1715), Baltimore (1715–1720) |
| Personal details | |
| Born | 1669 |
| Died | 23 January 1720 (aged 50–51) |
| Spouse | Lucy Bowen |
| Parents |
|
| Military service | |
| Allegiance | Kingdom of Great Britain |
| Branch/service | British Army |
| Years of service | 1693–1714 |
| Rank | Colonel |
| Unit | 6th Regiment of Foot |
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William Southwell (1669 – 23 January 1720) was an Irish politician and British Army officer.