| Ardell Wiegandt | |
| Birth Date: | June 28, 1940 |
| Birth Place: | Lakota, North Dakota, U.S. |
| Position1: | Linebacker |
| College: | NDSU |
| Coaching Years1: | 1974-1975 |
| Coaching Team1: | Birmingham Americans—Linebackers Coach (1974)—Defensive Coordinator (1975) |
| Coaching Years2: | 1977-1981 |
| Coaching Team2: | Calgary Stampeders—Assistant Coach (1977-1979)—Head Coach (1980-1981) |
| Coaching Years3: | 1982 |
| Coaching Team3: | Montreal Concordes Assistant coach |
| Coaching Years4: | 1985-1986 |
| Coaching Team4: | Buffalo Bills—Defensive Line Coach (1985)—Outside Linebackers Coach (1986) |
| Coaching Years5: | 1988 |
| Coaching Team5: | Ottawa Rough Riders Defensive line/linebackers coach |
| Coaching Years6: | 1989–1997 |
| Coaching Team6: | Northern Iowa Panthers Defensive coordinator |
| Coaching Years7: | 1997–2000 |
| Coaching Team7: | Kansas Jayhawks Defensive coordinator |
Ardell Leonard Wiegandt (born June 28, 1940) is a former Canadian football coach. He was the coach of the Calgary Stampeders from 1980 to 1981.[1] He was also inducted into the North Dakota State Athletic Hall of Fame in 1977.[2]