Callinus of Ephesus was an ancient Greek poet from Ephesus in Ionia, active in the mid-7th century BCE. His career coincided with the Cimmerian invasions of Asia Minor, a period of crisis which directly informs his surviving poetry. No further biographical details are recorded.

Only fragments of his elegiac poetry survive, preserved by later authors like Strabo and Stobaeus. His most notable extant fragment is a martial exhortation, urging his fellow Ephesians to courageous defense against their enemies.

Callinus is a foundational figure in Greek literary history as one of the earliest known composers of elegiac poetry. Along with Tyrtaeus, he established the elegy as a medium for martial exhortation. His work provides a contemporary poetic response to historical crisis and represents an important early stage in the elegiac tradition later developed by poets like Mimnermus.