Virolainen

or Virolaynen is a Finnish surname meaning "an Estonian". Notable people with the surname include:

• Anne-Mari Virolainen (born 1965), Finnish politician
• Daria Virolaynen (born 1989), Russian biathlete
• Johannes Virolainen (1914–2000), Finnish politician
• Roman Virolainen, Belarusian cross-country skier
• Aleksi "Aleksib" Virolainen, Finnish professional Counter-Strike player