Bang Waek (Thai: บางแวก, pronounced [bāːŋ wɛ̂ːk]) is a khwaeng (sub-district) of Phasi Charoen District, Bangkok's Thonburi side.

[2] It is named after Khlong Bang Waek, that runs through the area.

[3] In the early Rattanakosin period, Khlong Bang Waek and its basin considered as the tip of betel large market Talat Phlu, which is in Thon Buri District.

[4] Bang Waek can be considered as a northern part of the district, with total area of 2.29 km2 (0.88 mi2).

[5] The prominent local temple Wat Bang Waek is in Khuha Sawan Sub-district.