| Name | Meaning | Gender | Origin |
|---|
| Suzi | | Unisex | Hebrew |
| Suzy | Lily | Unisex | English |
| Taffy | Sticky candy | Male | Welsh |
| Teddy | From Edward - Prosperous guardian | Unisex | |
| Theo | divine gift | Male | English |
| Thor | Viking mythology: the ruler of the weather | Male | Norse |
| Tiger | A large, striped, carnivorous mammal from Asia. | Male | Animal |
| Tiger | A large, striped, carnivorous mammal from Asia. | Male | Animal |
| Tiger Lily | | Unisex | |
| Tigger | from Winnie the Pooh | Unisex | |
| Timmy | From Timothy - Honoring God | Unisex | |
| Tink | | Unisex | |
| Tinker | | Unisex | |
| Tinker | | Unisex | |
| Tippy | | Male | |
| Tito | Latin, meaning unknown | Male | Spanish |
| Toby | God is Good | Male | English |
| Tom | Bartender at the Leaky Cauldron.
| Male | English |
| Tommy | From Thomas - The twin. | Male | English |
| Tonto | | Male | |
| Toot | | Unisex | Hebrew |
| Topcat | | Male | |
| Topo | | Unisex | Hebrew |
| Totoro | after the character in the movie My Neighbor Totoro (Tonari No Totoro | Unisex | |
| Toulouse | after a kitten in the movie Aristocats | Male | |