Linkou County (Chinese: 林口县; pinyin: Línkǒu Xiàn) is a county in the southeast of Heilongjiang Province, China.

It is under the jurisdiction of the prefecture-level city of Mudanjiang.

Linkou County is divided into 11 towns.

[2] 2 Formally part of Oroqen Banner in Inner Mongolia but administered de facto by Daxing'anling Prefecture in Heilongjiang.

This Heilongjiang location article is a stub.