Abadiu of Antinoe was a fourth-century bishop residing in Egypt. He is recognized as a saint within the Coptic Orthodox tradition, having lived during a period of significant religious tension. His life and death are documented in historical hagiographies, such as the work *Les Martyrs d'Égypte* by Hippolyte Delehaye. He is primarily remembered for his role as a religious leader in Antinoe during a time of intense doctrinal conflict.