Virolahti (; ) is the southeasternmost municipality of Finland on the border of Russia. It is located in the Kymenlaakso region. The municipality has a population of ()
A small part of Virolahti was ceded by Sweden to Russia in the Treaty of Uusikaupunki in 1721. The border was located slightly further west than the modern Finnish-Russian border. In the treaty of Turku of 1743, the rest of Virolahti was ceded to Russia. The northern part of Virolahti became the Miehikkälä parish in 1863.