The copy which is preserved of Vocabula Biscaica was written by Jón Ólafsson from Grunnavík, who copied an older but now lost original.
The most notable of these is the manuscript Runologia by Jón Ólafsson (1705–79), which he wrote in Copenhagen (1732–52).
In the 1990s, Hannes Hólmsteinn Gissurarson was a vocal critic of an Icelandic businessman, Jón Ólafsson, chief owner of the private television channel, Stöð tvö.
Journalist Jón Ólafsson, one of the first Icelanders to emigrate to the United States, was renowned for his attempt to establish a community for Icelandic American political dissidents on Kodiak Island in Alaska via petition to Ulysses S. Grant.
Jon Axel Olafsson, Icelandic radio personality, producer and manager
Jon Corzine | Jon Stewart | Jon Pertwee | Jon Anderson | Jon Voight | Jon Krakauer | Jon | Jon English | Jon Bon Jovi | Jon Vickers | Jon Lord | Jon Langford | Jon Brion | Jon Huntsman, Jr. | Jon Faddis | Jon Tester | Jon Ronson | Jon Fishman | Uli Jon Roth | Jon Foreman | Jon Hendricks | Jon Fosse | Jon St. James | Jon Spencer Blues Explosion | Jon Postel | Jon Lovitz | Jon Lech Johansen | Jon Lebkowsky | Jon Christensen | The Jon Stewart Show |