Karatoulas (Greek: Καράτουλας) is a village in the municipality of Megalopoli, Arcadia, Greece.

It is situated on a hillside in the southwestern foothills of the Mainalo mountains, at about 750 m elevation.

It is 2 km northwest of Vangos, 3 km southeast of Lykochia and 9 km northeast of Megalopoli.