Hierotheus the Alchemical Poet is a figure of uncertain historicity. The name Hierotheus appears in other contexts, one as a supposed teacher of Pseudo-Dionysius in late antique Christian mysticism and another as a later Byzantine hymnographer. No biographical data confirms an alchemical poet by this name, and no poetic alchemical work is attributed to Hierotheus in standard sources.

The primary corpus of Greek alchemy features authors like Zosimus of Panopolis and Stephanus of Alexandria, but Hierotheus is absent from these records. Without attestation in the manuscript tradition or scholarly overviews, his significance cannot be established. If he existed, he would be a very late and otherwise undocumented contributor to the Greek alchemical tradition.