Nong Hi (Thai: หนองฮี, pronounced [nɔ̌ːŋ hīː]) is a district (amphoe) of Roi Et province, Thailand.

Neighboring districts are (from the south clockwise): Phon Sai, Suwannaphum, and Phanom Phrai of Roi Et Province, and Sila Lat of Sisaket province.

The minor district (king amphoe) was created on 1 April 1995, when the three tambons Nong Hi, Sao Hae, and Duk Ueng were split off from Phanom Phrai district.

[2] With publication in the Royal Gazette on 24 August, the upgrade became official.

[3] The district is divided into four sub-districts (tambons), which are further subdivided into 54 villages (mubans).