Athmonum or Athmonon (grc|Ἄθμονον), also Athmonia (Ἀθμονία),[1] was a deme of ancient Attica, situated on the site of Marousi (Amarousion). The name of the modern village has been derived from Amarysia, a surname of Artemis, who was worshipped under this designation at Athmonum. An inscription found near Marousi, in which the temenos of this goddess is mentioned, puts the matter beyond dispute.[2] Athmonum also possessed a very ancient temple of Aphrodite Urania. The inhabitants of this deme appear to have been considered clever wine-dressers.[3]