There have been several people named Ptolemy:

• Claudius Ptolemaeus, called Ptolemy, was an ancient Greek geographer and astronomer;
• The Ptolemaic dynasty of ancient Egypt included many kings by that name:
  • Ptolemy I Soter
  • Ptolemy II Philadelphos
  • Ptolemy III Euergetes I
  • Ptolemy IV Philopator
  • Ptolemy V Epiphanes
  • Ptolemy VI Philometor
  • Ptolemy VII Neos Philopator (never reigned)
  • Ptolemy VIII Euergetes II
  • Ptolemy IX Soter II
  • Ptolemy X Alexander I
  • Ptolemy XI Alexander II
  • Ptolemy XII Neos Dionysos (Auletes)
  • Ptolemy XIII
  • Ptolemy XIV
  • Ptolemy XV Caesarion
• Ptolemy, mythical ruler of Thebes, Greece.
• Ptolemaeus Chennus, 2nd-century grammarian
• Ptolemy, mascot of the Ptolemaic Terrascope magazine.