Oyama Station (小山駅, Oyama-eki) is a junction railway station in the city of Oyama, Tochigi, Japan, operated by the East Japan Railway Company (JR East).

This station is the representative station of Oyama City, the second largest city in Tochigi Prefecture, and the largest terminal station next to Utsunomiya Station in the prefecture.

Oyama Station is served by the following lines.

The Shinkansen portion of the station has one side platform and one island platform, both of which are elevated.

In fiscal 2019, the station was used by an average of 22,471 passengers daily (boarding passengers only).