Ōmori Station (大森駅, Ōmori-eki) is a railway station in the city of Kosai, Shizuoka Prefecture, Japan, operated by the third sector Tenryū Hamanako Railroad.

Ōmori Station is served by the Tenryū Hamanako Line, and is located 65.0 kilometers from the starting point of the line at Kakegawa Station.

The station has one side platform serving a single bi-directional track.

Ōmori Station is newest station on the Tenryū Hamanako Line and opened on April 1, 2009.

In fiscal 2016, the station was used by an average of 24 passengers daily (boarding passengers only).