Jón Magnússon may refer to:
- Jón Magnússon, Earl of Orkney in 1284–c. 1300
- Jón Magnússon (author), 17th century Icelandic author
- Jón Magnússon (politician) (1859-1926), prime minister of Iceland
- Jón Arnar Magnússon, Icelandic decathlete
- Jon Magnusson (producer), producer of I'm Sorry I Haven't A Clue
- Jón Magnússon (handballer)
- Jón Magnússon (painter), born 1966
This disambiguation page lists articles about people with the same name.
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