| tailDef | Protolude.Safe, Protolude |
| tailMay | Protolude.Safe, Protolude |
| tails | Protolude |
| tailSafe | Protolude.Safe, Protolude |
| take | Protolude |
| takeMVar | Protolude |
| takeWhile | Protolude |
| tan | Protolude.Base, Protolude |
| tanh | Protolude.Base, Protolude |
| testBit | Protolude |
| testBitDefault | Protolude |
| Text | Protolude |
| threadCapability | Protolude |
| threadDelay | Protolude |
| ThreadId | Protolude |
| ThreadKilled | Protolude |
| threadWaitRead | Protolude |
| threadWaitReadSTM | Protolude |
| threadWaitWrite | Protolude |
| threadWaitWriteSTM | Protolude |
| throwE | Protolude |
| throwError | Protolude |
| throwIO | Protolude |
| throwSTM | Protolude |
| throwTo | Protolude |
| to | Protolude |
| toEnum | Protolude.Base, Protolude |
| toException | Protolude |
| toInteger | Protolude.Base, Protolude |
| toIntegralSized | Protolude |
| toList | Protolude |
| toRational | Protolude.Base, Protolude |
| toS | Protolude.Conv, Protolude |
| toSL | Protolude.Conv, Protolude |
| toStrict | Protolude |
| trace | Debug, Protolude |
| traceId | Debug, Protolude |
| traceIO | Debug, Protolude |
| traceM | Debug, Protolude |
| traceShow | Debug, Protolude |
| traceShowId | Debug, Protolude |
| traceShowM | Debug, Protolude |
| trans | Protolude |
| transpose | Protolude |
| Traversable | Protolude |
| traverse | Protolude |
| traverse_ | Protolude |
| True | Protolude |
| truncate | Protolude.Base, Protolude |
| try | Protolude |
| tryIO | Protolude.Exceptions, Protolude |
| tryJust | Protolude |
| tryPutMVar | Protolude |
| tryReadMVar | Protolude |
| tryTakeMVar | Protolude |
| Type | Protolude.Base, Protolude |
| Typeable | Protolude |
| TypeError | |
| 1 (Data Constructor) | Protolude |
| 2 (Type/Class) | Protolude |
| TypeRep | Protolude |
| typeRep | Protolude |