Yeşilköy is a neighbourhood of the municipality and district of Sivrihisar, Eskişehir Province, Turkey.

[3] Formerly, the village was named "Acı Yaylası", and was subordinated to the Aşağı Kepen village.

Its distance to Sivrihisar is 17 km (11 mi), and to Eskişehir 117 km (73 mi).

[2] Main economy of the village is agriculture and husbandry.

Air & Space Museum in the aviation center are located just east of Yeşilköy.