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Across the world, Thomasia (Thomasia
) is a very rare unisex given name. The given name Thomasia is characteristic of Brazil, where it is a very rare gender-neutral name, and the United States, where it is a very rare mostly girly, but infrequently male name. Likewise, Thomasia is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Thomasia | Brazil, Ghana, Ethiopia, United States, South Africa |