Ōya Station (大屋駅, Ōya-eki) is a railway station on the Shinano Railway Line in the city of Ueda, Nagano, Japan, operated by the third-sector railway operating company Shinano Railway.

Ōya Station is served by the 65.1 km Shinano Railway Line and is 34.7 kilometers from the starting point of the line at Karuizawa Station.

[1] The station consists of two ground-level opposed side platforms serving two tracks.

[1] The Ueda Maruko Electric Railway also served the station from 1918 to 1969.

[citation needed] In fiscal 2011, the station was used by an average of 2,320 passengers daily.