Aigeis (Ancient Greek: Αἰγηΐς, romanized: Aigēis) was a tribe (phyle) of Ancient Athens which contained twenty demes: Lower and Upper Ankyle, Araphen, Bate, Diomeia, Erchia, Erikeia, Gargettos, Halae Araphenides, Hestiaia, Ikarion, Ionidai, Kollytos, Kolonos, Kydantidai, Myrrhinoutta, Otryne, Phegaia, Philaidai, Plotheia.
[1] The quota of demes for Aigeis showed the greatest variety of all the phyles during the first and second periods (343–253 BC) of bouleutic government.
[3] An individual named Hagnias II had an estate within the deme Araphen.
[4] At the time of the publication of a source published during 1851, the location of Bate was unknown.
[5] Erchia, Ikarion, Phegaia were some of the larger demes of the tribe.