Raḥmānān (Musnad: 𐩧𐩢𐩣𐩬𐩬 rḥmnn, "the Merciful") was an epithet and theonym predominantly used to refer to a singular, monotheistic God from the fourth to sixth centuries in South Arabia (though the term originates much earlier in Syria), beginning when the ruling class of the Himyarite Kingdom converted to Judaism and replacing invocations to polytheistic religions. The term may have also been monolatrous until the arrival of Christianity in the mid-sixth century.
During the reign of the Christian Himyarite king Sumyafa Ashwa, Jesus was referred to as the son of Raḥmānān. A few decades later, during the reign of Abraha, Jesus was also described as the Messiah of Raḥmānān.