Shimōsa-Kōzaki Station (下総神崎駅, Shimōsa-Kōzaki-eki) is a passenger railway station in the town of Kōzaki, Chiba Japan, operated by the East Japan Railway Company (JR East).

Shimōsa-Kōzaki Station is served by the Narita Line, and is located 31.6 kilometers from the terminus of line at Sakura Station.

Shimōsa-Kōzaki Station consists of dual opposed side platforms connected by a footbridge. The station building is adjacent to Platform 1. The station is staffed.

1	■ Narita Line	For Narita, Sakura, Chiba
2	■ Narita Line	For Sawara , Chōshi, Kashima-Jingu

Shimōsa-Kōzaki Station was opened on February 3, 1898, as Kōri Station (郡駅, Kōri-eki) on the Narita Railway for both passenger and freight operations. The Narita Railway was nationalised on September 1, 1920, becoming part of the Japanese Government Railway (JGR). The station was renamed to its present name on April 1, 1957. After World War II, the JGR became the Japan National Railways (JNR). Scheduled freight operations were suspended from April 1, 1971. The station was absorbed into the JR East network upon the privatization of the Japan National Railways (JNR) on April 1, 1987. The station building was rebuilt in 1998.

In fiscal 2019, the station was used by an average of 793 passengers daily (boarding passengers only).

• Ōsugi Shrine, also known as "Ambasama" (安婆嶋 – あんばさま)
• Kozaki Town Hall
• Kozaki Municipal Kanzaki Junior High School

• List of railway stations in Japan

Media related to Shimosa-Kozaki Station at Wikimedia Commons

• JR East station information (in Japanese)