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Home › Baby Names Directory › Treasa

Treasa

♀ Girl

How to Pronounce Treasa

Pronounced TRASS-uh /ˈtræs.ə/Medium

Meaning: Treasa is the Irish form of Theresa (Teresa). Theresa's own root is debated — often tied to Greek theros, 'summer, harvest,' or to the Aegean island of Thera. Irish speakers also associated Treasa with the native word for 'strength.' The Theresa link is the securest reading.Low

In 30 seconds: Treasa is the Irish Theresa — a name tied to 'harvest' or the isle of Thera, and to Irish 'strength' (said 'TRASS-uh'). It saw a small American run mid-century.
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Origin LowIrish, Greek
MeaningTreasa is the Irish form of Theresa (Teresa). Theresa's own root is debated — often tied to Greek theros, 'summer, harvest,' or to the Aegean island of Thera. Irish speakers also associated Treasa with the native word for 'strength.' The Theresa link is the securest reading.
U.S. rank (2005)#12933 ↘ Falling
2005 U.S. births8 girls (0.00% of U.S. girls)
Peak year1967
Total births (all-time)≈ 1,671

Popularity in the U.S. · SSA data

peak 196719162005

U.S. births per year (Social Security Administration, 1880–present). Pink marker = peak year.

SSA data updated May 2026. How we source & verify this data.

History & Origin

Treasa is the Irish form of Theresa, whose ancient root is uncertain — most often traced to Greek theros, 'harvest,' or to the island of Thera. Irish families also heard in it a native sense of strength. In America it stayed rare, reaching a small high around 1967 at close to a hundred girls a year, largely among Irish-heritage families.

Treasa never became common in the United States and has thinned since the nineteen-seventies. It remains best known in Ireland; for American parents it reads as an unusual Gaelic spelling of the familiar Theresa, and its pronunciation often needs a note, which is why we flag it.

Did you know? In Ireland Treasa doubles as a translation of Theresa and a word associated with strength, so the same name could honor a saint and carry a quiet sense of toughness at once.
Overall data confidence 50%
References — Treasa — Irish form of Theresa; root debated; also Irish 'strength'

Variations

TheresaTeresaToireasa

Nicknames

TessTessaTracy

Famous Bearers

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If you like Treasa…

Theresa— the name Treasa is the Irish form of
Teresa— the Spanish and Italian form of the same name
Saoirse— a like Irish girls' name whose spelling needs a pronunciation note
Aisling— a same-heritage Gaelic girls' name of the same feel

Explore names like Treasa

By themeuncertainvintageheritageirishstrength

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Frequently Asked

What does the name Treasa mean?

Treasa is the Irish form of Theresa, a name linked to Greek 'harvest' or the isle of Thera, and in Irish to 'strength.'

How do you pronounce Treasa?

It's most often said TRASS-uh /ˈtræs.ə/ — two syllables, stress on the first; the Irish spelling can mislead English readers.

Is Treasa a boy or girl name?

Treasa is used as a girl's name, the Irish form of Theresa.

How popular is Treasa?

Treasa was a rare Irish-heritage name in the United States that saw a small high in the late nineteen-sixties and has stayed uncommon.

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