Isabell is a German and Scandinavian spelling of Isabel, the medieval Spanish and Provençal form of Elizabeth, which goes back to the Hebrew Elisheva and means "God is my oath" or "devoted to God". American parents mostly reach for it as a streamlined alternative to the hugely popular Isabella. Isabell entered the top 1000 in 2002, peaked at number 724 in 2006 and has since slipped to number 2144 in 2025.