Ptolemaic

Ptolemaic is the adjective formed from the name Ptolemy, and may refer to:

Pertaining to the Ptolemaic dynasty

 * Ptolemaic dynasty, the Macedonian Greek dynasty that ruled Egypt founded in 305 BC by Ptolemy I Soter
 * Ptolemaic Kingdom

Pertaining to a certain ancient writer

 * Relating to Ptolemy, 2nd-century AD geographer and astronomer/astrologer
 * Ptolemaic system, a geocentric model of the universe developed in detail by the astronomer Claudius Ptolemaeus