Wang Yang (, ) is a district (amphoe) of Nakhon Phanom province, northeastern Thailand.
Wang Yang is bordered by the following districts, listed clockwise from the north: Pla Pak and Na Kae of Nakhon Phanom Province; Khok Si Suphan and Phon Na Kaeo of Sakon Nakhon province.
The minor district (king amphoe) Wang Yang was established on 1 July 1997, when four tambons were split off from Na Kae district.
On 15 May 2007, all 81 minor districts were upgraded to full districts. With publication in the Royal Gazette on 24 August the upgrade became official.
Wang Yang is divided into four sub-districts (tambons), which are further subdivided into 27 administrative villages (mubans).
There are three sub-district administrative organizations (SAO) in the district: