Khon Buri (Thai: ครบุรี,) is a district (amphoe) in the southern part of Nakhon Ratchasima province, northeastern Thailand.
As Tambon Khon Buri was very far from the center of Pak Thong Chai district, the government administered it together with Chae Sub-district in 1939.
At the same time, it was officially upgraded to a full district and renamed Khon Buri.
Neighbouring districts are (from the north clockwise): Chok Chai and Nong Bun Mak of Nakhon Ratchasima Province; Nong Ki of Buriram province; Soeng Sang of Nakhon Ratchasima; Watthana Nakhon and Mueang Sa Kaeo of Sa Kaeo province; Na Di of Prachinburi province; and Wang Nam Khiao and Pak Thong Chai of Nakhon Ratchasima.
The Sankamphaeng Range mountainous area is in the southern section of this district.