Nicomachus (disambiguation)

Nicomachus (c. 60 – c. 120) was a mathematician and Pythagorean philosopher from Gerasa.

Nicomachus may also refer to:
 * Nicomachus (mythology)
 * Nicomachus (scribe) (c. 410 BC), scribe tasked with publishing the laws of Solon
 * Nicomachus of Thebes (4th century BC), ancient Greek painter
 * Nicomachus (father of Aristotle) (c. 375 BC), father of the philosopher Aristotle
 * Nicomachus (son of Aristotle) (c. 325 BC), son of the philosopher Aristotle
 * Nicomachus of Macedon, eromenos of Dimnus, conspirator against Alexander the Great
 * Appius Nicomachus Dexter, politician of the Western Roman Empire
 * Gaius Asinius Nicomachus Julianus (born c. 185), Proconsul in Asia in the 3rd century
 * Rufius Petronius Nicomachus Cethegus (, politician of Ostrogothic Italy and the Eastern Roman Empire