| Osvaldo Jaconi | |
| Birth Date: | 16 January 1947 |
| Years1: | 1963–1974 |
| Clubs1: | Lecco |
| Years2: | 1974–1976 |
| Clubs2: | Teramo |
| Years3: | 1976–1978 |
| Clubs3: | Riccione |
| Years4: | 1978–1979 |
| Clubs4: | Civitanovese |
| Manageryears1: | 1982–1984 |
| Managerclubs1: | Civitanovese |
| Manageryears2: | 1984–1986 |
| Managerclubs2: | Fano |
| Manageryears3: | 1986–1987 |
| Managerclubs3: | Rimini |
| Manageryears4: | 1987–1988 |
| Managerclubs4: | Catania |
| Manageryears5: | 1988–1989 |
| Managerclubs5: | Rimini |
| Manageryears6: | 1989–1990 |
| Managerclubs6: | Lecco |
| Manageryears7: | 1990–1993 |
| Managerclubs7: | Leonzio |
| Manageryears8: | 1993–1998 |
| Managerclubs8: | Castel di Sangro |
| Manageryears9: | 1998–2000 |
| Managerclubs9: | Savoia |
| Manageryears10: | 2000–2002 |
| Managerclubs10: | Livorno |
| Manageryears11: | 2002–2003 |
| Managerclubs11: | Catania |
| Manageryears12: | 2003 |
| Managerclubs12: | Lucchese |
| Manageryears13: | 2003–2004 |
| Managerclubs13: | Ravenna |
| Manageryears14: | 2004–2005 |
| Managerclubs14: | Novara |
| Manageryears15: | 2005–2007 |
| Managerclubs15: | Ivrea |
| Manageryears16: | 2007–2008 |
| Managerclubs16: | Fidelis Andria |
| Manageryears17: | 2008–2009 |
| Managerclubs17: | Civitanovese |
| Manageryears18: | 2010–2012 |
| Managerclubs18: | Bassano |
| Manageryears19: | 2013–2014 |
| Managerclubs19: | Civitanovese |
| Manageryears20: | 2014–2016 |
| Managerclubs20: | Fermana |
Osvaldo Jaconi (born 16 January 1947) is an Italian football manager and former footballer. He played in the 1966–67 Serie A with Lecco.
Jaconi retired from playing professional football in 1982.[1]
Jaconi is a native of Lombardy, Italy.[3]
Jaconi achieved eleven promotions during his career, the most of any Italian football manager.[1]