Tomas is the Spanish, Portuguese, Scandinavian and Czech form of Thomas, which comes from the Aramaic word for "twin". The apostle Thomas spread the name through the Christian world, and in the United States the unaccented spelling Tomas is used mostly in Hispanic families. Tomas ranked number 475 in 2000, peaked at number 462 in 2002 and has held a steady place between 690 and 740 over the past decade, ranking number 691 in 2025.