Andreasson is a surname. Notable people with the surname include:
Egon Andreasson (1910–1983), Swedish politicianKnut Olaf Andreasson Strand (1887–1980), Norwegian politician for the Liberal PartyMarcus Andreasson (born 1978), Swedish footballerMartin Andreasson, born 1970, is a Swedish Liberal People's Party politician, member of the Riksdag 2002–2006Mattias Andréasson (born 1981), Swedish singer and Swedish Idol 2007 contestantRikard Andreasson (born 1979), Swedish cross country skier who has competed since 2000Rune Andréasson (1925–1999), Swedish comic creatorVeronica Andrèasson (born 1981), Swedish road cyclist