| Roles | Competed in Olympic Games | 
|---|---|
| Sex | Male | 
| Full name | William Addison•Chalfant | 
| Used name | William•Chalfant | 
| Born | 22 June 1854 in Mount Pleasant, Ohio (USA) | 
| Died | 31 July 1930 in Springfield, Missouri (USA) | 
| NOC |   United States | 
William Chalfant competed in roque at the 1904 St. Louis Olympics. Chalfant finished fourth and last, winning only one of six matches in the double round-robin, and that was a win by default over Charles Brown. Chalfant is not well known. Newspaper reports list him variously as living in Wilmington, Delaware or Springfield, Missouri.
| Games | Discipline (Sport) / Event | NOC / Team | Pos | Medal | As | |
|---|---|---|---|---|---|---|
| 1904 Summer Olympics | Roque |  USA | 
William Chalfant | |||
| Singles, Men (Olympic) | 4 |