Ptolemais Hermiou, or Ptolemais in the Thebaid, was a city and metropolitan archbishopric in Greco-Roman Egypt and remains a Catholic titular see.
Today, the city of El Mansha (Arabic: المنشأة)-Bsoi (Coptic: ⲡⲥⲟⲓ) in the Sohag Governorate is located where the ancient city used to be.