The New Territories South West geographical constituency is one of the ten geographical constituencies in the elections for the Legislative Council of Hong Kong which elects two members of the Legislative Council using the single non-transferable vote (SNTV) system.

The constituency covers Kwai Tsing District and Tsuen Wan District in New Territories.

[3] The constituency was created under the overhaul of the electoral system imposed by the Beijing government in 2021, replacing Kwai Tsing District and Tsuen Wan District of the New Territories West used from 1998 to 2021.

A constituency with the same name were also created for the 1995 Legislative Council election in the late colonial period.