| Roles | Competed in Olympic Games | |
|---|---|---|
| Sex | Male | |
| Full name | Bror Jonny•Danielson | |
| Used name | Jonny•Danielson | |
| Born | 4 September 1964 in Dala-Järna, Vansbro, Dalarna | |
| Measurements | 191 cm / 74 kg | |
| Affiliations | Kvarnsvedens GIF — Borlänge, Dalarna | |
| NOC | Sweden |
Throughout the late 1980s and early 1990s Jonny Danielson was one of the best distance runners in Sweden, winning more than a dozen titles. Danielson won his first medal at the national championships in 1986 with bronze in the 5,000 metres before winning gold the following year. He dominated the event for the next few years, winning five more titles from 1989 to 1993, only missing out in 1988 when he won silver. Danielson was also good in the 10,000 metres, setting a national record in 1989 that stood until 2024, in addition becoming the Swedish champion in 1993. He won further national titles in the half marathon (1993), the 4 km cross-country race (1987, 1989–90, 1992), the 12 km cross-country race (1993), and the 4 km cross-country team race (1989).
During this period Danielson was also part of the Swedish national team. He ran in the 5,000 metres at both the Seoul and Barcelona Olympics, with a best result of 10th at the 1988 Games. His brother Sven-Erik was a cross-country skier who competed at the 1980 Lake Placid and 1984 Sarajevo Olympics.
Personal Best: 5000 – 13:20.29 (1988).
| Games | Discipline (Sport) / Event | NOC / Team | Pos | Medal | As | |
|---|---|---|---|---|---|---|
| 1988 Summer Olympics | Athletics | Jonny Danielson | ||||
| 5,000 metres, Men (Olympic) | 10 | |||||
| 1992 Summer Olympics | Athletics | Jonny Danielson | ||||
| 5,000 metres, Men (Olympic) | 6 h2 r1/2 |