Khlong Khwang (Thai: คลองขวาง, pronounced [kʰlɔ̄ːŋ kʰwǎːŋ]) is a khwaeng (sub-district) of Phasi Charoen District, Thonburi side of Bangkok.

Khlong Khwang is a northernmost part of the district, with total area of 2.992 km2 (1.155 mi2), regarded as the third largest area of the district (after Bang Wa, Bang Waek).

These canals are also the dividing line of the administrative area.

Some canals also have boat noodles sold in boat by sailing along the vicinity waterways, once in a blue moon in modern times.

[2][4] Note: not to be confused with another Khlong Khwang in Bangkok, Soi Petchkasem 69 along Khlong Thawi Watthana, a canal that formed a boundary between Bang Khae and Nong Khaem Districts.