Anjalankoski is a municipality of Finland.

It is located in the province of Southern Finland and is part of the Kymenlaakso region. The municipality has a population of 17469 and covers an area of 752,78 kmē of which 26,64 kmē is water. The population density is 23,825 inhabitants per kmē.

The municipality is unilingually Finnish.

See also: Municipalities of Southern Finland