Mae Charim (Thai: แม่จริม, pronounced [mɛ̂ː t͡ɕā.rīm]) is a district (amphoe) in the eastern part of Nan province, northern Thailand.

The minor district (king amphoe) Mae Charim was established on 1 October 1969 with the three tambons Phong, Nong Daeng, and Mo Mueang split off from Mueang Nan district.

[2] Neighboring districts are,clockwise from the southwest, Wiang Sa, Phu Phiang, Santi Suk, and Bo Kluea of Nan Province.

The district is in the Luang Prabang Range mountain area of the Thai highlands.

The missing number 1 refers to tambon Phong which is now part of Santi Suk District.