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

[3] The name Bang Chak means "place of nipa palms", because there used to be this species of plants in this area.

It was mentioned in Kamsuan Samut or Kamsuan Siprat, an ancient literature written in the early Ayutthaya period alike nearby areas Bang Ramat and Bang Chueak Nang of Taling Chan District.

[3] Bang Chak can be considered as the eastern part of the district, with total area of 1.50 km2 (0.57 mi2).

Another temple Wat Yang Bang Chak is situated in the area of Kukha Sawan Sub-district.