| Donnie Duncan | |
| Birth Date: | 28 August 1940 |
| Death Place: | Dallas, Texas, U.S. |
| Player Sport1: | Football |
| Player Team2: | Austin |
| Player Sport3: | Football |
| Player Years4: | c. 1960 |
| Player Team4: | Austin |
| Coach Sport1: | Football |
| Coach Years2: | 1962 |
| Coach Team2: | Dublin HS (TX) (line) |
| Coach Years3: | 1963 |
| Coach Team3: | Tarleton State (OE) |
| Coach Years4: | 1965–1966 |
| Coach Team4: | Honey Grove HS (TX) |
| Coach Years5: | 1967–1969 |
| Coach Team5: | Henderson County (assistant) |
| Coach Years6: | 1970–1972 |
| Coach Team6: | Navarro |
| Coach Years7: | 1973–1978 |
| Coach Team7: | Oklahoma (assistant) |
| Coach Years8: | 1979–1982 |
| Coach Team8: | Iowa State |
| Coach Sport9: | Track and field |
| Coach Years10: | 1967–1970 |
| Coach Team10: | Henderson County |
| Admin Years1: | 1970–1973 |
| Admin Team1: | Navarro |
| Admin Years2: | 1986–1996 |
| Admin Team2: | Oklahoma |
| Admin Years3: | 1996–2016 |
| Admin Team3: | Big 12 (dir. of football ops.) |
| Overall Record: | 18–24–2 (college football) 24–7–1 (junior college football) 20–3–1 (high school football) |
| Bowl Record: | 1–0 (junior college) |
Donnie Duncan (August 28, 1940 – March 12, 2016) was an American football coach and college athletics administrator. He served as the head football coach at Iowa State University from 1979 to 1982, compiling a record of 18–24–2. His 1980 and 1981 Cyclones squads both made appearances in the national rankings. The 1981 Cyclones began the season at 5–1–1 and rose to No. 11 in the AP Poll. Led by future National Football League (NFL) players Dwayne Crutchfield, Dan Johnson, Karl Nelson and Chris Washington, the Cyclones tied No. 5 Oklahoma (7–7) and downed No. 8 Missouri (34–13).
A native of Celeste, Texas, Duncan played college football and college baseball at Austin College in Sherman, Texas. He began his coaching career in 1962 as line coach at Dublin High School in Dublin, Texas. The following year he moved to Tarleton State College—now known as Tarleton State University—in Stephenville, Texas as offensive ends coach. From 1965 to 1966, Duncan was the head football coach at Honey Grove High School in Honey Grove, Texas, leading the Warriors to a record of 20–3–1 in two season. In 1967, he was hired at Henderson County Junior College—now known as Trinity Valley Community College—as assistant football coach under Bob Baccarini and track coach.[1]
Duncan from cancer on March 12, 2016, in Dallas.[2]