Iwate-Wainai Station (岩手和井内駅, Iwate-Wainai-eki) was a railway station on the Iwaizumi Line in Miyako, Japan, operated by East Japan Railway Company (JR East).

Iwate-Wainai Station was a station on the Iwaizumi Line, and was located 10.0 rail kilometers from the opposing terminus of the line at Moichi Station.

Iwate-Wainai Station had a single side platform serving traffic in both directions. The original station building was demolished in December 2004 and replaced by a simple waiting room. The station was unattended.

Iwate-Wainai Station opened on 25 June 1942. The station was absorbed into the JR East network upon the privatization of the Japanese National Railways (JNR) on 1 April 1987. The operation of the Iwaizumi Line was suspended from July 2010 and the line was officially closed on 1 April 2014.

• Wainai Post Office
• Japan National Route 340

39°40′48″N 141°42′56″E / 39.6800°N 141.7155°E / 39.6800; 141.7155