Ptolemaic is the adjective formed from the name Ptolemy, and may refer to:
Ptolemaic Kingdom, founded in 305 BC by Ptolemy I Soter, including: Ptolemaic dynasty, the Macedonian Greek dynasty that ruled the kingdom Ptolemaic army Ptolemaic navy Ptolemaic system, a geocentric model of the universe developed in detail by the astronomer Claudius Ptolemaeus
See also Ptolemy, 2nd-century AD geographer and astronomer/astrologer Ptolemy (name)