Sveinsson is a patronymic (föðurnöfn, “fathername”) in Icelandic, meaning son of Sveinn. In Icelandic names, a föðurnöfn is not a surname. The name refers to: Ásmundur Sveinsson (1893–1982), Icelandic sculptor Atli Heimir Sveinsson (1938–2019), Icelandic composer Brynjólfur Sveinsson (1605–1675), Icelandic Lutheran clergyman; bishop of Skálholt; his face is on the 1000 kronur note Einar Sveinsson (1906–1973), Icelandic architect Jakob Jóhann Sveinsson (b. 1982), Icelandic Olympic swimmer Jón Sveinsson (1857–1944), Icelandic Jesuit and author of children’s stories Kjartan Sveinsson (b. 1978), Icelandic multi-instrumental musician
See also Sveinsdóttir, the equivalent feminine patronymic