Antimachus of Colophon or Claros was an ancient Greek poet.

Antimachus may also refer to:

Antimachus of Teos, ancient Greek epic poet Antimachus of Heliopolis, ancient Greek poet Antimachus (sculptor) Antimachus I, Graeco-Bactrian king Antimachus II, Graeco-Bactrian king Antimachus (mythology), several figures in Greek mythology