Athmonum or Athmonon (Ancient Greek: Ἄθμονον), also Athmonia (Ἀθμονία),[1] was a deme of ancient Attica, situated on the site of Marousi (Amarousion).[2][3] The name of the modern village has been derived from Amarysia, a surname of Artemis, who was worshipped under this designation at Athmonum.[4] An inscription found near Marousi, in which the temenos of this goddess is mentioned, puts the matter beyond dispute.[5] Athmonum also possessed a very ancient temple of Aphrodite Urania.[6] The inhabitants of this deme appear to have been considered clever wine-dressers.[7]