 
| Roles | Competed in Olympic Games | 
|---|---|
| Sex | Male | 
| Full name | Johan Helmer•Måhl | 
| Used name | Helmer•Måhl | 
| Born | 22 May 1888 in Kungsholmen, Stockholm, Stockholm (SWE) | 
| Died | 20 July 1971 in Enskede, Stockholm, Stockholm (SWE) | 
| Affiliations | IFK Västerås | 
| NOC |  Sweden | 
| Games | Discipline (Sport) / Event | NOC / Team | Pos | Medal | As | |
|---|---|---|---|---|---|---|
| 1912 Summer Olympics | Athletics |  SWE | Helmer Måhl | |||
| Standing High Jump, Men (Olympic) | NP r1/2 | |||||
| Standing Long Jump, Men (Olympic) |