Tamagawa-Jōsui Station (玉川上水駅, Tamagawa Jōsui-eki) is a passenger railway station located in the city of Tachikawa, Tokyo, Japan, operated by the private railway operator Seibu Railway, and a monorail station operated by the Tokyo Tama Intercity Monorail in Higashiyamato, Tokyo, Japan.

[citation needed] An enclosed waiting room was built on the Haijima Line platform in November 2007.

[1] In celebration of the 10th service anniversary of the Seibu 30000 series "Smile Train" as well as Gudetama's 5th birthday (both in April 2018), one of its 30000 series trains, the station's signboards and waiting areas will adopt the "Gudetama" theme beginning March 2018.

[2] In fiscal 2019, the station was the 22nd busiest on the Seibu network with an average of 42,416 passengers daily.

A commemorative monument for the base is located a short distance from the (monorail) station's east exits.