Nagao Station (長尾駅, Nagao-eki) is a passenger railway station operated by the Takamatsu-Kotohira Electric Railroad in the city of Sanuki, Kagawa, Japan.

It is operated by the private transportation company Takamatsu-Kotohira Electric Railroad (Kotoden) and is designated station "N17".

Nagao Station is a terminus of the Kotoden Nagao Line and is located 14.6 km from the opposing terminus of the line at Kawaramachi Station and 16.3 kilometers from Takamatsu-Chikkō Station.

The station consists of a single side platform serving one track.

An additional storage track is situated on the north side.