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.

Tuomo is a masculine Finnish name that serves as a variation of Thomas, which ultimately derives from the Aramaic word meaning 'twin.' Common in Finland, Tuomo carries the distinctive phonetic characteristics of Finnish naming traditions with its strong vowel sounds and rhythmic flow. The name has remained steadily used in Finland though it's quite rare in English-speaking countries. Tuomo has a distinctive, contemporary sound to non-Finnish ears while maintaining deep cultural roots in Finland. The name combines brevity with a strong presence, making it both practical and memorable. For those with Finnish heritage, Tuomo provides a way to honor cultural connections while offering a unique option in international settings.

Variation of Tavish, a Scottish form of Thomas, that's associated with radio/TV personality Tavis Smiley.

Tomás is one of the most popular names in Portugal, also used in Spanish-speaking countries and recently gaining popularity in Ireland, where it's the traditional spelling of Thomas.

Appealing, lively, and distinctive.

The Polish form of the Greek Thomais (or Thomaida), this feminine variation of Thomas was borne by a 5th century saint, celebrated by the Roman Catholic Church and the Russian Orthodox Church. A rare choice that may appeal to those who like Thomasine and Maia, Thomaida is notably used in Central Africa, particularly in Zambia and Malawi.

Tomsina is a feminine name that originated as a variation of Thomasina, the female form of Thomas. With Hebrew roots, it ultimately derives from the Aramaic word "ta'oma" meaning "twin." While less common than Thomasina, Tomsina maintains the same connection to the biblical Thomas, one of Jesus's twelve apostles. The name has seen limited usage throughout English-speaking countries, remaining a distinctive choice for parents seeking something traditional yet uncommon. Tomsina typically carries connotations of individuality and strength, with potential nicknames including Tomi, Sina, or Mina.

Tam Lin is the hero -- or maybe antihero -- of an old Scottish legend and ballad. The character Tam Lin was imprisoned by the Queen of the Fairies, called Titania or Mab.

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

A distinctive feminine form of Thomas, rarely heard outside of Greece, Thomai is notably borne by Greek singer Thomai Apergi and footballer Thomai Vardali. With its cool -i ending and connection to the classic name, Thomai may appeal to those who enjoy Maia or Sarai, or those who want to honor a Thomas.

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

Tevish is a masculine name with possible Scottish or Irish Gaelic origins, likely derived from the name Tavish or a variant of Thomas. Tavish itself comes from the Gaelic 'Tamhas,' a form of Thomas, which ultimately derives from the Aramaic word for 'twin.' The spelling variation with 'e' instead of 'a' gives Tevish a distinctive quality while maintaining its Celtic roots. The name carries a strong, concise sound with its two syllables and distinctive ending. While extremely rare in contemporary usage statistics, Tevish offers a connection to Celtic heritage in a compact, accessible form. It might appeal to parents seeking a name with traditional roots but uncommon usage, offering both cultural connection and individuality for a son.

Tomaisin is a rare masculine name that appears to be a variant spelling of Thomasin or Tomasin, which themselves derive from Thomas. The original name Thomas comes from Aramaic origins meaning 'twin.' This unusual spelling variation adds distinctiveness to the traditional name. Historically, Thomasin has been used for both males and females, though it's more commonly associated with female usage in modern times. The name has occasional literary connections, appearing in Thomas Hardy's novel 'The Return of the Native' as a female character. As Tomaisin specifically, the name remains extremely uncommon, making it a highly distinctive choice. Its rarity offers uniqueness while still connecting to the familiar and widely-used Thomas family of names.

A strong Slavic choice and the name of the first Croatian King, crowned in 925 AD. It derives from the elements tomiti meaning "to torment, struggle, languish" and slav meaning "glory", which, put together, could create a meaning along the lines of "struggle for glory".

Toomas is a masculine name of Estonian origin, being the Estonian form of Thomas. It derives from the Aramaic name Ta'oma meaning 'twin.' In Estonia, Toomas has been one of the more traditional and popular male names throughout recent history. It gained particular prominence in the late 20th century, with former Estonian President Toomas Hendrik Ilves helping to bring international recognition to the name. While primarily found in Estonia and among Estonian diaspora communities, Toomas maintains connections to the more widely recognized Thomas, though with its distinctive Estonian cultural identity and pronunciation.

Thoma is a masculine name that originated as a variant of Thomas, which derives from the Aramaic name תְּאוֹמָא (Ta'oma) meaning 'twin.' It has roots in various European cultures, particularly Italian and German traditions. In Italy, Thoma is a surname that became used as a given name, while in German-speaking regions, it developed as a shortened form of Thomas. The name has maintained steady but modest usage throughout history, never reaching extreme popularity but remaining recognized across different cultures. Thoma carries a classical feel with modern versatility, appealing to parents seeking a distinctive yet traditional-sounding name for their sons.

Tomislaw is a masculine Slavic name primarily found in Croatian, Serbian, and other South Slavic cultures. It combines two powerful elements: 'Tomi' (derived from Thomas, meaning 'twin' in Aramaic) and 'slav' (meaning 'glory' or 'fame' in Slavic languages). The name can be alternatively spelled as Tomislav, which is more common. Historically significant, Tomislav was the name of the first king of Croatia who ruled in the 10th century, making it a name with royal connotations and patriotic associations. While popular in Croatia and neighboring countries, Tomislaw remains relatively uncommon in non-Slavic regions. The name conveys strength and cultural heritage, offering parents with Slavic roots a way to honor their ancestry while giving their son a distinctive yet historically meaningful name.

Chumo is a masculine name primarily associated with Kenyan cultures, particularly among the Kalenjin people of the Rift Valley region. The name often functions as both a surname and given name within these communities. In Kalenjin naming traditions, names frequently relate to circumstances of birth, natural phenomena, or aspirational qualities. Chumo may relate to specific circumstances of birth or family expectations. The name has gained recognition through notable Kenyan athletes with this surname, including long-distance runners from the athletically renowned Kalenjin community. Outside East Africa, Chumo remains uncommon, maintaining its strong cultural associations with Kenyan heritage, endurance, and excellence in sports.

Fomka is a masculine diminutive name with Russian origins, derived from Foma, the Russian form of Thomas. The name Thomas comes from the Aramaic word meaning 'twin.' The diminutive suffix '-ka' adds an affectionate or familiar quality to the name. Fomka would typically be used as a nickname rather than a formal name in Russian culture. It carries the warmth and intimacy associated with Slavic diminutives. While not common in international contexts, Fomka represents the rich tradition of Russian naming patterns and familial endearment. Outside of Russian-speaking regions, the name remains quite rare but might appeal to parents seeking a distinctive name with authentic Slavic roots.