Tseung Kwan O is a bay in Sai Kung District, New Territories, Hong Kong. In the northern tip of the bay lies the Tseung Kwan O Village.
The Tseung Kwan O New Town, one of the nine new towns in Hong Kong, was mainly built on reclaimed land in the northern half of the bay. The current population as of 2011 is about 368,000.
Tseung Kwan O Plaza is a private housing estate and shopping mall near MTR Tseung Kwan O Station. It was developed by Nan Fung Group in 2004. It comprises 8 high-rise building with a total of 2880 units.