Choi Uk Tsuen or Tsoi Uk Tsuen (蔡屋村) is a village in Yuen Long Kau Hui (also considered as part of Shap Pat Heung), in the Yuen Long District of Hong Kong, China.
The village has an ancestral hall which houses photos of the living and deceased people of the village. The village also has a community centre.
The community living in Choi Uk Tsuen consists of people who have the surname Cai (romanized as Choi in Cantonese), specifically descendants of three independent family lines who share the same name and have joined the village at various times.
The traditional Poon Choi (Big Bowl Feast) still continues when there is a major event taking place (e.g. wedding celebration and various Chinese Festivals according to the Chinese New year).
Villagers have to decide who they want to represent the village. The villagers decide through the electoral selection.
Choi Uk Tsuen is part of the Tung Tau alliance (東頭約) or "Joint Meeting Group of Seven Villages", together with Nam Pin Wai, Tung Tau Tsuen, Ying Lung Wai, Shan Pui Tsuen, Wong Uk Tsuen and Tai Wai Tsuen. The Yi Shing Temple in Wong Uk Tsuen is an alliance temple of the Tung Tau Alliance.
Coordinates: 22°26′53″N 114°02′12″E / 22.44814°N 114.03654°E