Kōyadai Station (荒野台駅, Kōyadai-eki) is a passenger railway station in the town of Kashima, Ibaraki Prefecture, Japan operated by the third sector Kashima Rinkai Railway.

Kōyadai Station is served by the Kashima Rinkai Railway’s Ōarai Kashima Line, and is located 50.1 km from the official starting point of the line at Mito Station.

The station consists of one elevated side platform, serving traffic in both directions, with the station building underneath to one side. The station is unattended.

Kōyadai Station was opened on 14 March 1985 with the opening of the Ōarai Kashima Line.

In fiscal 2015, the station was used by an average of 166 passengers daily.

• National Route 51
• Nakano Post Office

• List of railway stations in Japan

Media related to Koyadai Station at Wikimedia Commons

• Kashima Rinkai Testudo Station Information (in Japanese)