Kiu Tsui Beach, Beach in Sai Kung District, Hong Kong.

Kiu Tsui Beach is a gazetted beach on the western side of Sharp Island, facing Inner Port Shelter in Sai Kung District. It is 85 metres long and has 13 barbecue pits, changing rooms, showers, toilets, a refreshment kiosk and a water sports centre. The beach looks out to Pak Sha Chau, Cham Tau Chau and Tai Chan Chau.

In September 2018, Typhoon Mangkhut caused sewage from the Sai Kung Sewage Treatment Works to leak into the sea near Kiu Tsui Beach, forcing its temporary closure. The beach is now managed by the Leisure and Cultural Services Department and is part of the Sharp Island area of the Hong Kong UNESCO Global Geopark.

Kiu Tsui Beach is one of two gazetted beaches on Sharp Island, the other being Hap Mun Bay Beach. It is smaller and tends to be the quieter of the two, so bathers share the sand with few others. The barbecue area has 13 pits, and the beach lies within the Sharp Island section of the Hong Kong UNESCO Global Geopark.

Kiu Tsui Beach is reached by kai-to from Sai Kung Public Pier; the crossing to Sharp Island takes a short time. The beach is open from April to October with lifeguard service provided by the Leisure and Cultural Services Department. Facilities include changing rooms, showers, toilets and a floating platform. It lies on the western side of the island facing Inner Port Shelter, with Starfish Bay to the north and the tombolo linking Kiu Tau islet to the south.

During low tide, a natural sand path emerges between Sharp Island and the nearby Kiu Tau islet, creating a temporary walkway for visitors. This seasonal occurrence provides a rare opportunity to explore an otherwise isolated area on foot.