Spanish feminine form of Thomas, from Aramaic 'te'oma' meaning 'twin.'
Tomasa is the Spanish and Italian feminine form of Tomás — itself the Iberian rendering of Thomas, drawn from the Aramaic "toma," meaning "twin." The apostle Thomas, doubting and then believing, gave the name its first great propagation across the Christian world; by the medieval period Thomas had become one of the most common names in Europe. The feminization Tomasa followed naturally in the Spanish-speaking world, giving women a form of the name that felt fully their own rather than borrowed.
In Spain and Latin America, Tomasa has long been a name of dignified everyday use — borne by grandmothers, saints' day honorees, and women in literature who anchor their communities with quiet authority. Saint Thomas Aquinas, whose feast day falls on January 28, made Tomás a name of intellectual prestige, and Tomasa inherited some of that gravity. The name also appears in regional folk traditions and corridos across Mexico, where it carries a warm, deeply rooted feeling.
Outside the Spanish-speaking world, Tomasa is genuinely rare, which makes it a striking choice — familiar enough in its sounds to require no explanation, but distinct enough to feel like a discovery. It ages beautifully: equally plausible on a newborn and on an elder, equally at home in a village and a city. For families with Spanish heritage looking for something that honors tradition without feeling archaic, Tomasa offers a quietly elegant answer.