Waeng Noi (Thai: แวงน้อย, pronounced [wɛ̄ːŋ nɔ́ːj]; Northeastern Thai: แวงน้อย, pronounced [wɛ᷇ːŋ nɔ̂ːj]) is a district (amphoe) in the southwestern part of Khon Kaen province, northeastern Thailand.

Neighboring districts are (from the north clockwise): Waeng Yai and Phon of Khon Kaen Province; Bua Lai, Bua Yai, and Kaeng Sanam Nang of Nakhon Ratchasima province; and Khon Sawan of Chaiyaphum province.

[2] The district is divided into six subdistricts (tambons), which are further subdivided into 73 villages (mubans).

Waeng Noi is a township (thesaban tambon) which covers parts of tambon Waeng Noi.

This Khon Kaen Province location article is a stub.