| Thornbury and Yate |
Encompassing an area to the north-east of Bristol, it is one of three constituencies that make up the South Gloucestershire Unitary Authority Area |
| Thurrock |
Full name (in Craig 3,4) Essex, Thurrock |
| Tipperary |
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| Tipperary East |
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| Tipperary Mid |
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| Tipperary North |
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| Tipperary South |
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| Tipton and Wednesbury |
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| Tiverton |
Full name (in Craig 2,3,4) Devon, Tiverton |
| Tiverton and Honiton |
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| Tiverton and Minehead |
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| Tonbridge |
Constituency first used at the February General election of 1974 (28/02/1974). Full name (in Craig 3,4) Kent, Tonbridge |
| Tonbridge |
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| Tonbridge and Malling |
Constituency first used at the February General election of 1974 (28/02/1974). |
| Tooting |
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| Torbay |
Constituency first used at the February General election of 1974 (28/02/1974). |
| Torfaen |
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| Torquay |
Constituency first used at the February General election of 1974 (28/02/1974). Full name (in Craig 2,3) Devon, Torquay |
| Torridge and Tavistock |
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| Torrington |
Constituency first used at the February General election of 1974 (28/02/1974). Full name (in Craig 4) Devon, Torrington |
| Totnes |
Constituency of same name also existed 1832-1868. Full name (in Craig 2,3,4) Devon, Totnes. |
| Totnes |
Disenfranchised for corruption in 1868. Constituency of same name reformed 1885. |
| Tottenham |
Full name (in Craig 2) Middlesex, Tottenham. Constituency of same name also existed 1950-1974¹, and reformed 1983. |
| Tottenham |
Constituency first used at the February General election of 1974 (28/02/1974). Constituency of same name also existed 1885-1918, and reformed 1983. |
| Tottenham |
Constituency of same name also existed 1885-1918 and 1950-1974¹. |