Bang Kapi (Thai: บางกะปิ, pronounced [bāːŋ kāpìʔ]) is a khwaeng (subdistrict) of Huai Khwang District, Bangkok.

Its name "Bang Kapi" after "Thung Bang Kapi" (ทุ่งบางกะปิ), a vast field covers the area from the south of Ayutthaya Province to Bangkok and the east side of Chao Phraya to Nakhon Nayok Rivers in the past.

[2] In the King Rama III' reign, a khlong (canal) Saen Saep was dug for use as a shortcut for transporting military hardware for use in the Siamese–Vietnamese War.

It flows through the area of Thung Bang Kapi to the east at Chachoengsao Province.

[2] This field also referred to in the masterpiece tragedy novel Plae Kao (แผลเก่า) by Mai Mueangdoem as the backdrop of the whole story.