Gregentius of Taphar was a mid-6th-century archbishop, reportedly serving in Zafar, the capital of the Himyarite kingdom. While his life is documented in a 10th-century hagiographical dossier, many details of his biography are considered legendary or fictitious. The collection of texts describing him includes a biography, a set of laws, and a theological debate. He is recognized as a saint within various Christian traditions, including Catholic and Orthodox, and is commemorated on December 19.