| Name | Meaning | Gender | Origin |
|---|
| Taurus | bull | Male | Latin |
| Teal | Bluish Green Color | Male | English |
| Ted Tonks | | Unisex | |
| Teddy | From Edward - Prosperous guardian | Unisex | |
| Teila | | Unisex | |
| Tiberius Ogden | | Unisex | |
| Tippy | | Male | |
| Tobias | From the Hebrew Tobiah Jah is good.
| Male | Greek |
| Tom | Bartender at the Leaky Cauldron.
| Male | English |
| Tom And Huck | | Male | Hebrew |
| Totoro | after the character in the movie My Neighbor Totoro (Tonari No Totoro | Unisex | |
| Toulouse | after a kitten in the movie Aristocats | Male | |
| Tucker | Tucker of doth
| Male | English |
| Tyrell | Derivative of the Scandinavian god of battle Tyr. Tuesday was named for Tyr.
| Male | |
| Tzvi | Deer
| Male | |
| Ubel | Evil
| Male | |
| Uriel | God is my light
| Male | Hebrew |
| Urquhart Rackharow | | Unisex | |
| Vernon Dursley | Harry's uncle.
| Male | |
| Videl | Life. Used as both surname and given name. See also Vito.
| Male | |
| Vincent | Conquering.
| Male | Latin |
| Vincente | Victor
| Male | |
| Waldo | Powerful. Abbreviation of Oswald.
| Male | |
| Wally | Variant of Walter rules: conquers.
| Male | English |
| Washington | From the intelligent one's farm
| Male | English |