City One (Chinese: 第一城) is a station on the Tuen Ma line in Hong Kong.

It serves City One Shatin (the station's namesake), Prima Villa, Sunshine Grove, Yu Chui Court and Yue Tin Court, and also serves five schools.

The print featured on the platform pillar and glass barrier is the annual dragon boat race held at Shing Mun River during the Dragon Boat Festival.

On 14 February 2020, the Ma On Shan line was extended south to a new terminus in Kai Tak, as part of the first phase of the Shatin to Central Link Project.

On 27 June 2021, the Tuen Ma line Phase 1 officially merged with the West Rail line in East Kowloon to form the new Tuen Ma line, as part of the Shatin to Central link project.