Thea is a diminutive of names ending in -thea, including Dorothea, Althea, and Anthea. It is also the Anglicized spelling of Theia, the Titan of sight, goddess of light, and mother of the moon. She was the consort of Hyperion, and mother of Helios, Selene, and Eos.

Tessa is one of those golden names that's been popular but not TOO popular for several decades now. Tessa has ranked in the Top 500 in the US since 1981 but has risen only once above Number 200.

Though never as popular as the name of her Bewitched mother, Samantha, Tabitha has its own quirky, magical charm. The name of a charitable woman who was restored to life by Saint Peter in the Bible, it was a popular Puritan choice. Sarah Jessica Parker and Matthew Broderick chose it for one of their twin daughters, which gave it a slight boost. Nonetheless, Tabitha remains in decline.

This hauntingly euphonious Choctaw name has re-entered the public domain, as memories of the outrageous actress Tallulah Bankhead have faded. For years, Tallulah was a name associated only with Bankhead, named for her paternal grandmother who was named after the Georgia town of Tallulah Falls.

Tove is a modern variation of an Old Norse name for which there are no letters on the twenty-first century keyboard (Þórfríðr, for those interested.) Surviving and thriving in modern Scandinavia in the form of Tove, Tuva, and Tova, it is originally related to the name Thor and means "beautiful, beloved."

A favorite in England and Wales where nicknames as given names are very much the norm, Tilly has the potential to catch on in the US, given its similarity to the popular Lily and Ellie and the rising stars Millie, Billie, Kallie, and Nellie.

Talia is derived from the Hebrew elements tal, meaning "dew," and yah, in reference to God. In the mythology of one ancient sect, Talia was one of ten angels who attended the sun on its daily course. The occasionally homophonous name Thalia has unrelated Greek origins.

Cosy and warm but with plenty of substance and strength, Tess is a literary diminutive that works perfectly well as a stand-alone name. Stylish in the Netherlands, it currently sits outside the Top 1000 in the US, where Tessa and Teresa are currently preferred.

Theodora is one of the most revival-worthy of the charmingly old-fashioned Victorian valentine names, softly evocative but still substantial, as is the reversed-syllable Dorothea.

This quirky British nickname-turned- real-name is most famously borne by English actress Tuppence Middleton, who was named for her mother Tina’s childhood nickname. There is also a British literary namesake in Agatha Christie’s fictional detective Tuppence Beresford, whose real name is Prudence.

Mystical and intriguing, this vintage name has an unexpectedly modern feel. Conjuring up imagery of glowing evening light, Twyla could appeal as as alternative to Lila, as a nature-inspired option, or for the grown-up fans of the Stephanie Meyer's vampire series, Twilight.

Twyla — also spelled Twila — has a number of possible origins. On one hand, it could be simply inspired by the word "twilight", connecting it to the time of evening when the sun is below the horizon. Alternatively, it could come from the word "twill", a type of textile weave that creates a sturdy fabric, or, it could be inspired by the French Étoile (said EH-TWAL), meaning "star".

Associated with choreographer Twyla Tharp, a waitress in the television series Schitt's Creek, and a Monster High character Twyla Boogeyman, Twyla was also used by Toni Morrison in her short story, Recitatif, which was reissued in 2022.

Thalia was one of the Three Graces in Greek mythology, and also the Muse of comedy and pastoral poetry, making this a Hellenic choice worthy of consideration.

Despite a rich history in Irish myth preceding its plantation appearance in Gone with the Wind, widespread use in the seventies caused Tara to lose its Irish accent.

Classic yet spritely, Tatiana has long been familiar and popular in Russia and Eastern Europe, though it wasn't until the 80s that it caught on in the English-speaking world. With short forms Tiana, Tati, and Tanya, it is a versatile choice that has nevertheless seen a decline in use in recent year.

How do you spell Teresa? Teresa, the simpler phonetic form of this name, was the most popular variation for its early life, when it was used exclusively in Spain and Portugal. Other spellings of Teresa include Theresa, the usual English form, and the French Therese.

A short, bright name which originates as a short form of names including Tiana, and Tatiana. Not as popular as Mia – a plus if you're seeking a short and pretty but less common name. In Spanish and Portuguese tía/tia is a word meaning "aunt". In Haida culture in indigenous Canada, Tia is a goddess of peaceful death.

Adding a final a to Tamar lends it a more sensual Slavic tone, making it a more popular choice than the original.

Tina, despite its petite and tinkly image, is apt these days to be replaced by the more elegant originals, Christina and Martina.It does have some strong namesakes, though, in Tina Turner (born Anna Mae), Tina Brown (born Christina), Tina Fey (born Elizabeth), and photographer Tina Barney (born Tina).

A name that feels both spiritual and trendy, Trinity surged up the charts in the early 2000s, following the release of The Matrix. In just two years, it made an impressive jump from the latter end of the charts to the US Top 100, where it remained for more than a decade.

A surprise recent hit revival with cutting-edge British, Tribeca and Malibu parents; Tillie, also spelled Tilly, is cute, frilly, and sassy all at once. Tilly is currently Number 90 on the England-Wales popularity list, joining such other Top 100 nickname names as Milly, Maisie, Kitty and Lottie. Tillie along with these other short forms transform proper names rooted in other cultures into true English names for girls.