Ethnikos means National in Greek and may refer to the following:
In football, Ethnikos Achna FC, a football team from Achna, Cyprus Ethnikos Assia, a lower-league football team from Assia, Cyprus Ethnikos Asteras, a football team from Athens, Greece Ethnikos Filippiada F.C., a football team from Filippiada, Greece Ethnikos Katerini, a lower-league football team from Katerini, Greece Ethnikos Patron, a lower-league football team from Patras, Greece Ethnikos Piraeus, a football team from Piraeus, Greece