1978 Mr International - IFBB
| Overall Winner Joe Nazario | |
HeavyWeight | |
| 1 | Joe Nazario |
| 2 | Ben Herder |
| 3 | Ray Mentzer |
| 4 | Don Peters |
| 5 | Maurice LeGault |
| 6 | George Paine |
| 7 | Morris Jacobson |
| 8 | Mahmoud Jizawi |
MiddleWeight | |
| 1 | Roger Callard |
| 2 | Samir Bannout |
| 3 | Frank Calta |
| 4 | Sammie Willis |
| 5 | Mehdi Khaneghani |
| 6 | Andreas Cahling |
| 7 | Kevin McNamara |
| 8 | Douglas Beaver |
| 9 | Raymond Sansoucy |
| 10 | Erwin Note |
| 11 | Filippo Alfani |
| 12 | Joe Caserta |
| 13 | Leon Van Der Westhuizen |
LightWeight | |
| 1 | Carlos Rodriguez |
| 2 | Anthony Pandolfo |
| 3 | John Burkholder |
| 4 | Ugo Romano |
| 5 | Franz Aldrian |
| 6 | Tevfik Ulusoglu |
| 7 | Philip Dhiamini |
| 8 | Leopoldo Oreo |
| 9 | Gilles Pomerleau |
| 10 | Ricardo Valdes |
| 11 | Ali Tez |
| 12 | Jocelyn Pelletier |