This article discusses the origin of three Semitic deities which are attested in the Aramaic inscriptions in the North Arabian city of Tayma'. These are Salm, Sangila and Ašīmā. Together they comprise the pantheon of Taymā'. The etymology, identity and the attestation of these deities in Aramaic and other sources are investigated. After studying these three deities within their Semitic background, this paper suggests that these deities, which had been adopted by Arabs in Taymā', are of Aramaic origin and were introduced to North Arabia from North Syria.