Gryllos (Greek: Γρύλλος, before 1927: Μουνδράζα - Moundraza[2]) is a village and a community in the municipal unit of Skillounta, Elis, Greece.

The community includes the small village Chani Gryllou.

It is 3 km northwest of Graikas, 3 km northeast of Vrina and 5 km southeast of Krestena.

The Greek National Road 76 (Krestena - Andritsaina - Megalopoli) runs through Chani Gryllou.

Gryllos suffered damage from the 2007 Greek forest fires.