| Terence O'Loghlin | |
| Birth Date: | 1764 |
| Death Date: | 15 August 1843 |
| Death Place: | Bentinck Street, London |
| Placeofburial: | Chalfont St Peter, Buckinghamshire |
| Allegiance: | United Kingdom |
| Branch: | British Army |
| Serviceyears: | 1782–1790 1792–1827 |
| Rank: | Lieutenant-general |
| Commands: | 1st Life Guards Household Cavalry Brigade |
| Battles: | |
| Relations: | Murrough O'Brien, 1st Marquess of Thomond (uncle) |
Lieutenant-General Terence O'Loghlin (1764 – 15 August 1843) was an Irish British Army officer. Born in County Clare in the Kingdom of Ireland, he joined the army in 1782 as an ensign in the 45th Foot. He served in the Flanders Campaign during the French Revolutionary Wars and was wounded twice.[1] He transferred into the Life Guards and rose to the rank of colonel by 1808.[2] He served in the Peninsular War from January 1813 to April 1814. He was breveted as a major general and commanded the First Cavalry Brigade of the Duke of Wellington's army.[3]
He retired to half pay in 1821, but had one final promotion to lieutenant general in 1825 before fully retiring in 1827. He lived at The Grange, Chalfont St Peter in Buckinghamshire. He died in London in August 1843.[4]