Wan Tsai
Image:Wan [Tsai map.svg|right|thumb|Location of Wan Tsai within HKSAR.]
[Image:Wan Tsai.jpg|right|thumb|South campsite of Wan Tsai.]
Wan Tsai is a peninsula at the northern extremity of the north-western Sai Kung Peninsula, Hong Kong, with Hoi Ha Wan to its west and Long [Harbour (Hong Kong)|Long Harbour] on its east. Grass Island lies east of the peninsula.