Chom Bueng (Thai: จอมบึง, pronounced [t͡ɕɔ̄ːm bɯ̄ŋ]) is a district (amphoe) of Ratchaburi province in western Thailand.

Neighboring districts are (from the north clockwise): Dan Makham Tia and Tha Muang of Kanchanaburi province; and Photharam, Mueang Ratchaburi, Pak Tho, Ban Kha, and Suan Phueng of Ratchaburi Province.

Chomphon cave was renamed by King Chulalongkorn during his visit in the area in 1895, due to a stalactite that resembled an epaulette of a field marshal.

He then renamed the area big lake or chom bueng, and made it a minor district (king amphoe).

[1] Chom Bueng is divided into six sub-districts (tambons), which are further subdivided into 90 administrative villages (mubans).