Nicanor (/naɪˈkeɪnər/; Greek: Nικάνωρ Nīkā́nōr) was a Syrian Greek who lived in the 3rd century BC under Seleucid Empire.

Together with a Gaul named Apaturius, he assassinated Seleucus III Ceraunus during his expedition into Asia against Attalus I in 222 BC. He was immediately seized and executed by order of the general Achaeus.

(Polybius 4.48; Eusebius Armenian text 165.)

•  This article incorporates text from a publication now in the public domain: Smith, William, ed. (1870). Dictionary of Greek and Roman Biography and Mythology. {{cite encyclopedia}}: Missing or empty |title= (help)