Salmanas the Alchemist is a name attributed to a figure from the late antique period, likely between the 3rd and 5th centuries CE. He is associated with the Greco-Egyptian tradition of alchemy, a field that combined practical craft, philosophical theory, and spiritual ideas. However, no reliable historical records or biographical details about an individual named Salmanas exist in standard references for ancient Greek authors.

No specific writings are definitively credited to him. The primary surviving corpus of Greek alchemical texts features other authors, and no treatise under the name Salmanas has been identified. According to modern scholars, the name may be a pseudonym, a corrupted version of another name like Solomon (a common attribution in such texts), or belong to a minor figure whose work is entirely lost.

If Salmanas was a historical practitioner, his significance would lie within the broader study of late antique alchemy. This tradition is important for the history of science and ideas, representing early experimentation with materials and the development of technical language. Without any attested works, however, his personal contribution cannot be established from available sources.