Jónsson is a surname of Icelandic origin, meaning son of Jón. In Icelandic names, the name is not strictly a surname, but a patronymic. The name refers to:
Arnar Jónsson (actor) (born 1943), Icelandic actorArnar Jónsson (basketball) (born 1983), Icelandic basketball playerBjarni Jónsson (born 1920), Icelandic mathematician and logicianBjarni Jónsson (artist) (1934-2008), Icelandic painterBjarni Jónsson (footballer) (born 1965), Icelandic international footballerBjörn Jónsson (1846-1912), Icelandic prime ministerEggert Jónsson (born 1988), Icelandic footballerEinar Jónsson (1874-1954), Icelandic sculptorEmil Jónsson (1902-1986), Icelandic prime ministerFinnur Jónsson (philologist) (1858-1934), Icelandic philologistHelgi Jónsson (1867-1925), Icelandic botanist and algologistHjálmar Jónsson (footballer) (born 1980), Icelandic footballerJón Jónsson, Icelandic singerJón Sveinbjørn Jónsson (1955–2008), Norwegian poetJóhannes Jónsson, Icelandic businessmanKristján Jónsson (1852-1926), Icelandic prime ministerMagnús Jónsson (disambiguation)Ríkarður Jónsson (1888-1972), Icelandic sculptorRíkharður Jónsson (born 1929), Icelandic footballerSigurður Jónsson (disambiguation)Sævar Jónsson (born 1957), Icelandic footballerTodi Jónsson (born 1972), Faroese footballerÁsgrímur Jónsson (1876-1958), Icelandic painter