|Type||Competed in Olympic Games|
|Full name||Johan Gunnar•Jansson|
|Born||13 October 1897 in Fellingsbro, Lindesberg (SWE)|
|Died||15 December 1953 in Eskilstuna (SWE)|
|Measurements||189 cm / 108 kg|
|Affiliations||IFK Eskilstuna, Eskilstuna (SWE)|
Gunnar Jansson had the following podium finishes at major championships: 3rd in the 1934 European Championships Hammer Throw.
Personal Best: HT – 53.41 (1935).
|1932 Summer Olympics||Athletics||Hammer Throw, Men||Olympic||7||Representing Sweden|
|1936 Summer Olympics||Athletics||Hammer Throw, Men||Olympic||12||Representing Sweden|