Betina is a European diminutive form related to Elizabeth, from Hebrew and meaning "God is my oath."
Betina is a variant of Bettina, the affectionate Italian and German diminutive of Elizabeth or Elisabetta. Elizabeth itself descends from the Hebrew Elisheba, meaning 'my God is an oath' or 'my God is abundance,' borne by Aaron's wife in the Book of Exodus. Through centuries of European Christian devotion — particularly to Saint Elizabeth of Hungary and Saint Elizabeth, mother of John the Baptist — the name proliferated in dozens of diminutive and pet forms across the continent.
Bettina and Betina represent its southern and central European softening. The name gained considerable cultural weight through Bettina von Arnim (1785–1859), the German Romantic writer, salonnière, and social activist whose correspondence with Goethe became a celebrated literary document. Her intellectual brilliance and passionate advocacy for the poor gave the name an association with artistic intensity and independent thought that persists in German-speaking cultural memory.
In Portugal, Brazil, and parts of the Czech and Slovak republics, the single-t spelling Betina has been the preferred form, naturalised into local phonetics. Betina carries the warmth of a familiar name while retaining a cosmopolitan edge that distinguishes it from plainer Elizabeth derivatives. It was most popular in mid-twentieth-century Central Europe and Iberia, where it conveyed both affection and a slight international sophistication. Today it feels refreshingly understated — a name with a full biography behind it, worn lightly.