Virolainen is a Finnish surname (meaning "an Estonian"). People with this surname include:
Anne-Mari Virolainen (born 1965), Finnish politician
Daria Virolaynen (born 1989), Russian biathlete
Heikki W. Virolainen (1936–2004), Finnish sculptor
Johannes Virolainen (1914–2000), Finnish politician
Jyrki Virolainen (born 1943), Finnish jurist
Kyllikki Virolainen (1944–2009), Finnish politician and journalist; second wife of Johannes Virolainen
Merja Virolainen (born 1962), Finnish writer and translator
Keijo "Nalle" Virolainen, Finnish cartoonist
Reija Virolainen, Finnish television director
Roman Virolaynen, Belarusian cross-country skier
