City One Shatin (Chinese: 沙田第一城) is a residential precinct in Sha Tin, New Territories, Hong Kong.

With massive reclamation, the land which City One was built on was formerly Yuen Chau Kok and the Tide Cove.

Approximately 44.2% of the population were male, 93.8% were ethnic Chinese, over 93.6% of residents spoke primarily Cantonese, with 2.9% speaking English as their primary language.

The wet market, renovated in 2013, has all kinds of Chinese and Asian grocers, butchers, florists, greengrocers and general stores.

Major fast-food chains such as McDonald's, Café de Coral, Fairwood, Yoshinoya and KFC have outlets all around with extended opening hours.

A number of private doctor offices and general practitioners could be found available in the two shopping centres for less urgent patients.

There are two pre-schools, two primary schools and two secondary schools nearby: City One is divided into two constituencies in the Sha Tin District Council, City One (R04) which has been represented by Wong Ka Wing and Yue Shing (R05) which has been represented by Leung Ka Fai.

Most of the gatherings take place at Baptist Lui Ming Choi Primary School and Citymark Plaza in Siu Lek Yuen.

Citybus operates several routes from City One to the central business district in Kowloon and on the Hong Kong Island.

Long Win Bus (Airbus) route A41 express service connects City One to the Hong Kong International Airport.

[11] Green Public light buses connects City One to the rest of Sha Tin with routes to Fo Tan, Ma On Shan and Tai Wai.

The estate is served by the Sha Tin Road freeway and the Tate's Cairn Highway is in close proximity.

Traffic to the northwestern New Territories has been improved by the Shing Mun Tunnel which links Sha Tin with Tsuen Wan.