List of Famous people with last name Jonsson

Sigurður Jónsson, also known as Siggi Jónsson, is a retired Icelandic footballer and former coach of Swedish club Djurgårdens IF.

Kristján Jónsson is a retired Icelandic football defender.

Nils Jönsson Oxenstierna (1390s–1450s) was a Swedish nobleman. During the Kalmar Union, he was co-regent of Sweden, together with his brother Bengt Jönsson Oxenstierna (1390s–1450s) from January to June 1448. He was a member of the Privy Council of Sweden in 1432, Castellan (hövitsman) at Borgholm Castle in 1436, Stäket in 1438, and Nyköping Castle in 1442. Dubbed as knight by King Christopher of Bavaria following his coronation in 1441.

Bjarni Jónsson was an Icelandic mathematician and logician working in universal algebra, lattice theory, model theory and set theory. He was emeritus distinguished professor of mathematics at Vanderbilt University and the honorary editor in chief of Algebra Universalis. He received his PhD in 1946 at UC Berkeley under supervision of Alfred Tarski.