| James Henry Deakin | |
| Office: | Member of Parliament for Launceston |
| Term Start: | 9 February 1874 |
| Term End: | 6 May 1874 |
| Predecessor: | Henry Lopes |
| Successor: | James Henry Deakin (junior) |
| Birth Date: | 2 March 1823 |
| Death Place: | Moseley Park, Cheadle, Cheshire |
| Nationality: | British |
| Party: | Conservative |
Colonel James Henry Deakin (2 March 1823 – 23 September 1880)[1] was a British Conservative Party politician and brewer.
He was elected MP for Launceston in the 1874 general election but was unseated just under three months later after an election petition, owing to corruption, including allowing his tenants to "kill rabbits the eve of the election", causing a by-election.[2] His son James Henry Deakin (junior) was elected in his place at the ensuing by-election.[3]
In 1871, Deakin bought the Werrington manor from Wicklow MP William Wentworth FitzWilliam Dick, selling off much of the land and properties of the estate. In 1882, the manor and its lands were then purchased by John Charles Williams.[4]
Deakin was an Honorary Colonel of the 33rd Lancashire Volunteers.[1]