| Horst Witzler | |
| Birth Date: | 1932 8, df=yes |
| Manageryears1: | 1961–1964 |
| Managerclubs1: | SV Meppen |
| Manageryears2: | 1965–1966 |
| Managerclubs2: | SV Arminia Hannover |
| Manageryears3: | 1966–1970 |
| Managerclubs3: | Schwarz-Weiß Essen |
| Manageryears4: | 1970–1971 |
| Managerclubs4: | Borussia Dortmund |
| Manageryears5: | 1972–1973 |
| Managerclubs5: | Rot-Weiss Essen |
| Manageryears6: | 1974 |
| Managerclubs6: | 1. FC Mülheim |
| Manageryears7: | 1974–1976 |
| Managerclubs7: | Alemannia Aachen |
| Manageryears8: | 1980 |
| Managerclubs8: | SC Herford |
| Manageryears9: | 1980 |
| Managerclubs9: | K.A.S. Eupen |
| Manageryears10: | 1985–1987 |
| Managerclubs10: | K.A.S. Eupen |
Horst Witzler (born 18 August 1932) is a retired German football manager.