| 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 in Richmond Heights, Missouri (USA) |
| Affiliations | Missouri Athletic Club |
| NOC | United States |
| 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 |