Jón Árnason may refer to:
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Jón Árnason (bishop of Garðar) (died 1209)
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Jón Árnason (author) (1819–1888), Icelandic author
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Jón Loftur Árnason (born 1960), Icelandic chess player
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Jón Gunnar Árnason (1931–1989), Icelandic sculptor
{{hndis, Jon Arnason