Miyauchi Station (宮内駅, Miyauchi-eki) is a railway station in the city of Nagaoka, Niigata, Japan, operated by East Japan Railway Company (JR East).

It is 162.6 kilometers from the terminus of the Jōetsu Line at Takasaki and is 70.0 kilometers from the terminus on the Shin'etsu Main Line at Naoetsu.

The station has a Midori no Madoguchi staffed ticket office.

With the privatization of Japanese National Railways (JNR) on 1 April 1987, the station came under the control of JR East.

The current station building was completed in 1992.