Itanus or Itanos was a Greek city and port on the northeast coast of ancient Crete, on the promontory which the Romans called Itanum, the neuter form of Itanus, Latin for Greek Itanos. The base of the tripartite northeast promontory, today called Cape Sideros, is still called Itanos or Itano in modern Greek.

Itanos is a municipal unit of the municipality (demos) Siteia in the Lasithi regional unit, eastern Crete, Greece. A former municipality itself, it was included in Siteia as part of the 2011 local government reform. The municipal unit has an area of 197.406 km2 (76.219 sq mi). The population was 2,014 in 2021.