| Name | Meaning | Gender | Origin |
|---|
| Tamsin | twin | Female | English |
| Tandy | after the brand | Female | Native |
| Tansy | immortality, flower name | Female | Greek |
| Tara | A hill where the kings met
| Female | Irish |
| Tatiana | | Female | |
| Tayna | | Unisex | Hebrew |
| Teagan | beautiful | Female | Irish |
| Tegan | doe | Unisex | |
| Tella | | Unisex | Hebrew |
| Tenchi | after Tenchi Nage, the name of a throw in the Aikido martial art | Unisex | |
| Terra | earth | Female | Latin |
| Tess | fourth born | Female | English |
| Tessa | Abbreviation of Teresa which is a popular saint's name of uncertain meaning.
| Female | English |
| Tessie | Abbreviation of Teresa which is a popular saint's name of uncertain meaning.
| Female | English |
| Thea | goddess, sort | Female | Greek |
| Thelma | nursing | Female | Literary |
| Tia | Aunt
| Female | Spanish |
| Tika | | Unisex | |
| Tilda | German, battle-mighty | Female | Estonian |
| Tina | River
| Female | English |
| Tish | Latin, joy, gladness | Female | English |
| Titania | giant | Female | Greek |
| Tobi | | Unisex | Hebrew |
| Tobie | Abbreviation Of The Hebrew Name Tobiah Meaning Jah Is Good. | Unisex | English |
| Toi | | Unisex | Hebrew |