| 100th Regiment of Foot (Prince Regent's County of Dublin Regiment) | |
|---|---|
| Active | 1804–1818 |
| Country |  United Kingdom |
| Branch |  British Army |
| Type | Line Infantry |
| Size | One battalion |
| Engagements | War of 1812 |
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The 100th Regiment of Foot (Prince Regent's County of Dublin Regiment) was raised in Ireland in 1804 for service in the Napoleonic Wars. After a few weeks, Lieutenant Colonel John Murray was appointed to command; he was to remain in this post for most of the regiment's active service.