Kymi River

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Kymijoki Kymmene älv
Kymi river
Origin	Päijänne
Mouth	Baltic Sea
Basin countries	Finland
Length	about 180-200 km
Source elevation	78.2 m

Kymi river (Finnish: Kymijoki, Swedish: Kymmene älv) is a river in Finland.

The river flows from the lake Päijänne and enters the Gulf of Finland near the city of Kotka. One of the largest rivers in Southern Finland it is a major source of hydroelectricity. The towns of Kotka, Anjalankoski and Kuusankoski along the river are major centers of pulp and paper industry.

The westernmost distributary of the river served as a border between Sweden and Russia from 1743 to 1809. The parts of Finland east of the river were later called Old Finland. Old Finland was incorporated in the Grand Duchy of Finland in 1812.