Index - T
| tail | BasicPrelude |
| tails | BasicPrelude |
| take | BasicPrelude |
| takeWhile | BasicPrelude |
| tan | CorePrelude, BasicPrelude |
| tanh | CorePrelude, BasicPrelude |
| terror | CorePrelude, BasicPrelude |
| Text | CorePrelude, BasicPrelude |
| textToString | BasicPrelude |
| toEnum | CorePrelude, BasicPrelude |
| toException | CorePrelude, BasicPrelude |
| toInteger | CorePrelude, BasicPrelude |
| toRational | CorePrelude, BasicPrelude |
| transpose | BasicPrelude |
| Traversable | CorePrelude, BasicPrelude |
| traverse | BasicPrelude |
| traverse_ | BasicPrelude |
| True | CorePrelude, BasicPrelude |
| truncate | CorePrelude, BasicPrelude |
| tryIOError | CorePrelude, BasicPrelude |
| tshow | BasicPrelude |
| Typeable | CorePrelude, BasicPrelude |