Agonopterix jezonica is a moth in the Depressariidae family. It was described by Matsumura in 1931. It is found in Japan (Honshu). The wingspan is about 7 mm. The forewings are uniformly drab, irrorated with dark brown slightly chestnut. There is a white spot in the centre of the cell at two-thirds, preceded by a vague dark chestnut blotch.