 
| Roles | Competed in Olympic Games | 
|---|---|
| Sex | Male | 
| Full name | Guenter H.•Seidel | 
| Used name | Guenter•Seidel | 
| Born | 23 September 1960 in Fischen im Allgäu, Bayern (GER) | 
| Measurements | 187 cm / 79 kg | 
| NOC |  United States | 
| Medals | OG | 
| Gold | 0 | 
| Silver | 0 | 
| Bronze | 3 | 
| Total | 3 | 
Guenter Seidel rode dressage at the 1996, 2000, and 2004 Olympics, winning a bronze each time in the team dressage. Seidel also won a team silver medal the 2002 World Equestrian Games, and won silver at the 1995 Pan American Games in team dressage. He added a team bronze medal at the 2006 World Equestrian Games.
Seidel was born in Germany but came to the United States in 1985, and later obtained US citizenship. His full-time job was teaching dressage and training riders and horses.
| Games | Discipline (Sport) / Event | NOC / Team | Pos | Medal | As | |
|---|---|---|---|---|---|---|
| 1996 Summer Olympics | Equestrian Dressage (Equestrian) |  USA | Guenter Seidel | |||
| Individual, Open (Olympic) | Graf George | 8 | ||||
| Team, Open (Olympic) | Graf George / United States | 3 | Bronze | |||
| 2000 Summer Olympics | Equestrian Dressage (Equestrian) |  USA | Guenter Seidel | |||
| Individual, Open (Olympic) | Foltaire | 26 | ||||
| Team, Open (Olympic) | Foltaire / United States | 3 | Bronze | |||
| 2004 Summer Olympics | Equestrian Dressage (Equestrian) |  USA | Guenter Seidel | |||
| Individual, Open (Olympic) | Aragon | 14 | ||||
| Team, Open (Olympic) | Aragon / United States | 3 | Bronze |