Jón Arnar Magnússon (born 28 July 1969 in Selfoss) is a former decathlete from Iceland. He has won silver and bronze medals at world indoor championships, all in heptathlon, as decathlon is unsuitable for indoor contests. Jón is the Icelandic record holder at 110 m hurdles, long jump and decathlon and former record holder at 100 m and 200 m.
| Representing | ||||||
|---|---|---|---|---|---|---|
| 1988 | Sudbury, Canada | – | Decathlon | DNF | ||
| 1989 | Games of the Small States of Europe | Nicosia, Cyprus | bgcolor=silver | 2nd | 100 m | 10.92 s |
| bgcolor=silver | 2nd | Long jump | 7.24 m | |||
| 1994 | Götzis, Austria | 12th | Decathlon | 7896 pts | ||
| Helsinki, Finland | – | Decathlon | DNF | |||
| 1995 | Barcelona, Spain | 28th (q) | Long jump | 7.32 m | ||
| Götzis, Austria | 5th | Decathlon | 8237 pts | |||
| Gothenburg, Sweden | – | Decathlon | DNF | |||
| 1996 | European Indoor Championships | Stockholm, Sweden | 3rd | Heptathlon | 6069 pts | |
| Olympic Games | Atlanta, United States | 12th | Decathlon | 8274 pts | ||
| 1997 | Paris, France | 3rd | Heptathlon | 6145 pts | ||
| Götzis, Austria | 5th | Decathlon | 8470 pts | |||
| Games of the Small States of Europe | Reykjavík, Iceland | bgcolor=gold | 1st | 110 m H | 13.91 s | |
| bgcolor=gold | 1st | 4 × 100 m | 42.06 s | |||
| Athens, Greece | – | Decathlon | DNF | |||
| 1998 | European Indoor Championships | Valencia, Spain | 5th | Heptathlon | 6170 pts | |
| Götzis, Austria | 3rd | Decathlon | 8573 pts | |||
| Budapest, Hungary | 4th | Decathlon | 8552 pts | |||
| IAAF World Combined Events Challenge | several places | 2nd | Decathlon | 25,708 pts | ||
| 1999 | Maebashi, Japan | 5th | Heptathlon | 6293 pts | ||
| Games of the Small States of Europe | Schaan, Liechtenstein | bgcolor=silver | 2nd | 110 m H | 14.44 m | |
| bgcolor=gold | 1st | Long jump | 7.64 m | |||
| bgcolor=silver | 2nd | Shot put | 15.70 m | |||
| Hypo-Meeting | Götzis, Austria | – | Decathlon | DNF | ||
| World Championships | Seville, Spain | – | Decathlon | DNF | ||
| 2000 | European Indoor Championships | Ghent, Belgium | – | Heptathlon | DNF | |
| Hypo-Meeting | Götzis, Austria | 9th | Decathlon | 8206 pts | ||
| Olympic Games | Sydney, Australia | – | Decathlon | DNF | ||
| 2001 | World Indoor Championships | Lisbon, Portugal | 2nd | Heptathlon | 6233 pts | |
| Götzis, Austria | – | Decathlon | DNF | |||
| Games of the Small States of Europe | Serravalle, San Marino | bgcolor=gold | 1st | 110 m H | 14.43 s | |
| bgcolor=gold | 1st | Long jump | 7.41 m | |||
| bgcolor=gold | 1st | Shot put | 15.71 m | |||
| 3rd | Discus throw | 46.40 m | ||||
| World Championships | Edmonton, Canada | – | Decathlon | DNF | ||
| 2002 | European Indoor Championships | Vienna, Austria | 4th | Heptathlon | 5996 pts | |
| Hypo-Meeting | Götzis, Austria | 6th | Decathlon | 8104 pts | ||
| European Championships | Munich, Germany | 4th | Decathlon | 8238 pts | ||
| 2003 | World Indoor Championships | Birmingham, United Kingdom | 4th | Heptathlon | 6185 pts | |
| Hypo-Meeting | Götzis, Austria | 3rd | Decathlon | 8222 pts | ||
| World Championships | Paris, France | – | Decathlon | DNF | ||
| 2004 | Budapest, Hungary | 7th | Heptathlon | 5993 pts | ||
| Hypo-Meeting | Götzis, Austria | – | Decathlon | DNF | ||
| Olympic Games | Athens, Greece | – | Decathlon | DNF | ||
| 2005 | Games of the Small States of Europe | Andorra la Vella, Andorra | bgcolor=silver | 2nd | 110 m H | 15.13 s |
| 3rd | 4 × 100 m relay | 42.90 s | ||||
| 5th | 4 × 400 m relay | 3:23.79 | ||||
| 4th | Pole vault | 4.60 m | ||||
| 3rd | Long jump | 7.30 m | ||||
| 4th | Shot put | 15.25 m | ||||
| 4th | Javelin throw | 56.96 m | ||||
Outdoor
Indoor