Names That Mean Twin

A solid classic with plenty of history, Thomas strikes the balance between strength and gentleness. A favorite in the UK, a staple in France, and Australia, and never absent from the US Top 100, Thomas feels like a safe bet and a name that fits into any era.

Tamsin is an offbeat name occasionally heard in Britain and just waiting to be discovered here. U.K. actress Tamsin Greig is a star of the show Episodes, Tamsin Olivier is the daughter of Joan Plowright and Sir Laurence Olivier..

A surprising number of parents choose to put the nickname Tommy on their son's birth certificate rather than the more traditional Thomas. Perhaps even more surprising is thE fact that Tommy has never been off the United States popularity charts. More recently, however, the name has been trending downward.

Just like Sam and Ben, Tom could be revived as a simple, well liked name on its own. Tom, just Tom, is one of the Top 100 Boy Names in France

This Scottish form of Thomas has a lot of charm, evoking images of men in plaid kilts playing the bagpipes. As for the 'ish' ending, it could either be seen as cozy and hamish, or a little wishy-washyish.

The most common form of Thomas in various European languages, although some Anglophone parents also use this as a phonetic spelling of the classic name. Tomas is usually pronounced with an emphasis on the second syllable -- toe-MAHS -- though you might not succeed in getting other people to go along with that in the US, where your exotically named Tomas may quickly devolve into just plain Tom.

Toma is one of the handful of names that has different versions for boys and girls. For boys, it's the Romanian and Croatian short form of Thomas.

Alternative Cornish spelling of Tamsin, which derives from Thomasin or Thomasina.

Cute boyish nickname for Thomasina, Thomasin or Tamsin.

Ymir comes from Norse mythology, he is a giant and forebear of all the Norse gods and goddesses. A moon of Saturn is named Ymir.

Maori form of Thomas

Popularized in Scotland by Tam O'Shanter, the hero of one of Robert Burns' most famous poems, it's associated in the U.S. with the plaid cap he gave his name to. But this could make a creative honor name or middle name after an ancestral Thomas.

A Welsh diminutive of Tomos/Thomas, or just a simplified spelling of Tommy.

More often spelled Romolo,a name sometimes heard in the Hispanic and Italian communities; this version was used by singer Monica.

The short O variation of Tomi (homophonous with Tommy) was used for dozens of daughters in midcentury America, putting it firmly in grandma name territory.

Highly unusual possibility for a twin girl.

Ulan is a gentle, intriguing nature name used in the Philippines, though it might also be a Kazakh name meaning "young man", a Ghanaian name referring to a first born twin, or a Russian name, from uhlan meaning "cavalry, lancer".

Pronounced like Tom, but not everyone will know that.

Appealing, lively, and distinctive.

Though it makes the name more distinctive, we'd advise dropping the 'z'.