Kim Sơn (listenⓘ) is a rural district of Ninh Bình province in the Red River Delta region of Vietnam.

As of 2003 the district had a population of 171,660.

[1] The district covers an area of 165 km².

The district capital lies at Phát Diệm.

[1] This article about a location in Ninh Bình province, Vietnam is a stub.