Jón Þór Ólafsson (born 13 March 1977) is an Icelandic politician.
A business administration student at the University of Iceland, he was elected to the Althing in the 2013 Icelandic parliamentary election.
He is a member of the Pirate Party Iceland.
He represented the Reykjavik Constituency South until he resigned in 2015, and was replaced by Ásta Helgadóttir.