| Roles | Competed in Olympic Games (non-medal events) | |
|---|---|---|
| Sex | Male | |
| Full name | George Dean•Mattis | |
| Used name | George•Mattis | |
| Born | 31 January 1880 in ?, Missouri |  USA |
| Died | 10 February 1931 (aged 51 years 10 days) in Richmond Heights, Missouri | USA |
| Affiliations | Missouri Athletic Club | |
| NOC | United States | USA |
| Games | Discipline (Sport) / Event | NOC / Team | Pos | Medal | As | |
|---|---|---|---|---|---|---|
| 1904 Summer Olympics | Athletics | USA |
George Mattis | |||
| High Jump (Handicap), Men (Olympic (non-medal)) | 2 | |||||
| High Jump (Handicap), Men (Olympic (non-medal)) | 3 | |||||
| Long Jump (Handicap), Men (Olympic (non-medal)) | 2 |
