Amadeo is the Spanish and Italian form of Amadeus, a Latin name from amare and deus that means "lover of God" or "loved by God". It is best known from Mozart's middle name and from King Amadeo I of Spain, while the Italian spelling Amedeo belongs to the painter Modigliani. Amadeo ranked number 4796 in 2000 and has climbed over the last decade to number 1869 in 2025, its best rank on record.