Tseung Kwan O New Town, commonly known as Tseung Kwan O (Chinese: 將軍澳新市鎮; Jyutping: Zoeng1 gwan1 ou3 san1 si5 zan3), is one of the nine new towns in Hong Kong, built mainly on reclaimed land in the northern half of Junk Bay in southeastern New Territories, after which it is named.
Development of the new town was approved in 1982, with the initial population intake occurring in 1988. As of 2016, the town is home to around 396,000 residents. The total development area of Tseung Kwan O, including its industrial estate, is about 17.18 square kilometres (6.63 sq mi), with a planned population of 445,000. Major residential neighbourhoods within the new town include Tsui Lam, Po Lam, Hang Hau, Tseung Kwan O Town Centre, Tiu Keng Leng (also known by its English name Rennie's Mill) and Siu Chik Sha, etc.