Alexios Aristenos (Greek: Ἀλέξιος Ἀριστηνός) was oikonomos and nomophylax of the Great Church at Constantinople. He flourished around 1166 AD, in which year he was present at the Council of Constantinople. He edited a Synopsis Canonum with scholia, which is given by Bishop Beveridge in his Pandectae Canonum, Oxon. 1672, fol. vol. ii. post pag. 188, and vol. i. p. 1, &c. Other works by him are quoted.