Halimus or Halimous (grc|Ἁλιμοῦς, Latin: Halmius) was a deme of ancient Athens, said to have been so called from τὰ ἅλιμα, sea-weeds,[1] was situated on the coast between Phalerum and Aexone, at the distance of 35 stadia from the city of Athens.[2] It had temples of Demeter and Core,[3] and of Heracles.[4] Halimus was the deme of Thucydides the historian.
The site of Halimus is located north of modern Ag. Kosmas.