1991 in Finland

• 17 March - 1991 Finnish parliamentary election^[1]
• 18 April - The first of the Hausjärvi Gravel Pit Murders is discovered.^[2]
• 20 October - 1991 Ålandic legislative election^[3]

• 12 "Wilderness Areas" are established in Lapland:^[4]
  • Hammastunturi Wilderness Area
  • Kaldoaivi Wilderness Area
  • Käsivarsi Wilderness Area
  • Kemihaara Wilderness Area
  • Muotkatunturi Wilderness Area
  • Paistunturi Wilderness Area
  • Pöyrisjärvi Wilderness Area
  • Pulju Wilderness Area
  • Tarvantovaara Wilderness Area
  • Tsarmitunturi Wilderness Area
  • Tuntsa Wilderness Area
  • Vätsäri Wilderness Area

• Finland in the Eurovision Song Contest 1991
• List of number-one singles of 1991 (Finland)

Finnish people were in

• 1991 World Amateur Boxing Championships
• 1991 Men's European Volleyball Championship
• 1991 European Figure Skating Championships

• 3 June - Sami Vatanen, ice hockey defenceman

• 12 March – Ragnar Granit, neuroscientist and recipient of the Nobel Prize in Physiology or Medicine (born 1900)^[5]
• 30 August - Joel Pekuri, diplomat (born 1927)^[6]