Jurong Lake (Chinese: 裕廊湖 ; Malay: Tasik Jurong ; Tamil: ஜூரோங் ஏரி) is a 70ha freshwater lake and reservoir located in the western region of Singapore formed with the damming of Sungei Jurong further downstream. The lake serves as a reservoir contributing to the water supply of the country. It lies next to the Lakeside MRT Station, which derived its name from this geographical feature. The lake is surrounded by parkland, which serves as a recreational ground for nearby residents in Jurong East and Jurong West New Towns.
A landscaped sanctuary called Jurong Lake Park was built around the perimeter of the lake and work was completed in January 2006. Also, a 2.8 kilometre water promenade along Jurong Lake Park would allow residents to participate in watersports.
As is the case for most other reservoirs in Singapore, swimming is currently illegal in the lake, although this may change in line with the Singapore government's liberalisation of the use of bodies of water in the republic. Fishing is now allowed in some designated spots around the lake where only artificial baits can be used for fishing. However, the water is noted to be green in colour during dry weather and a murky brown after a downpour, the likely result of runoff from its urban catchment area.