Doukas (Greek: Δούκας) is a mountain village and a community in the municipal unit of Foloi, Elis, Greece.

The community includes the village Lasdikas.

Situated at approximately 600 m above sea level, its climate is relatively cool during the summer and wet during the winter.

Doukas is 2 km northwest of Lalas, 4 km east of Kryoneri and 11 km northeast of Olympia.

The village was affected by the 2007 Greek forest fires.