Ptolemais

Ptolemais may refer to:

People

 * Ptolemais of Cyrene, a c. 3rd-century BC mathematician and musical theorist
 * Ptolemais, daughter of Ptolemy I Soter and mother of Demetrius the Fair

Africa

 * Ptolemais, Cyrenaica, a city in modern-day Libya
 * Ptolemais Euergetis, in what is now the Faiyum in Egypt
 * Ptolemais Hermiou or Ptolemais in the Thebaid, modern-day El Mansha in the Sohag Governorate of Egypt
 * Ptolemais Theron, a city on the African coast of the Red Sea

Elsewhere

 * Ptolemais or Lebedus, on and around the Kısık Peninsula
 * Ptolemaida in West Macedonia, Greece
 * Ptolemais (Pamphylia), a coastal town of ancient Pamphylia or of Cilicia
 * Ptolemais, a name that may have been given to Larisa (Troad), Anatolia
 * Ptolemais in Phoenicia, later Acre, in modern-day Israel