Amin is an Arabic name that means "trustworthy" or "faithful" and was the epithet al-Amin given to the Prophet Muhammad in his youth. It is used across the Muslim world from Persia to Indonesia, and Amen in Christian prayer comes from the same Semitic root. Amin has moved gently upward in the United States, from number 1895 in 2000 to number 1603 in 2025, its best rank to date.