Na Mon (Thai: นามน, pronounced [nāː mōn]) is a district (amphoe) in the eastern part of Kalasin province, northeastern Thailand.

Neighboring districts are (from the northeast clockwise): Huai Phueng, Kuchinarai, Don Chan, Mueang Kalasin, and Somdet of Kalasin Province.

The minor district (king amphoe) Na Mon was created on 20 September 1973, when the three tambons Na Mon, Yot Kaeng, and Song Plueai were split off from Mueang Kalasin district.

[2] The district is divided into five sub-districts (tambons), which are further subdivided into 66 villages (mubans).

This Kalasin Province location article is a stub.