Results from the 1980 Monaco Grand Prix Formula Three held at Monte Carlo on May 17, 1980, in the Circuit de Monaco.[1]
| Pos | Driver | Constructor | Laps | Time/Retired | |
|---|---|---|---|---|---|
| 1 |  Mauro Baldi | Martini MK31-Toyota | 24 | 39.40,116 | |
| 2 | Michele Alboreto | March 803-Alfa Romeo | 24 | 40.07,307 | |
| 3 |  Jean-Louis Schlesser | March 803-Alfa Romeo | 24 | 40.07,881 | |
| 4 | Kenny Acheson | March 793-Toyota | 24 | 40.11,383 | |
| 5 | Daniele Albertin | Martini MK31-Toyota | 24 | 40.18,616 | |
| 6 | Hans-Georg Bürger | Ralt RT3-Toyota | 24 | 40.22,583 | |
| 7 | Alain Ferté | Martini MK27-Renault | 24 | 40.23,216 | |
| 8 | Nigel Mansell | March 803-Toyota | 24 | 40.24,372 | |
| 9 | Günter Gebhardt | March 793-Volkswagen | 24 | 40.34,794 | |
| 10 | Michele Kropf | Ralt RT1-Toyota | 24 | 40.34,983 | |
| 11 | Fernando Cazzaniga | March 783-Toyota | 24 | 41.12,754 | |
| 12 |  Oscar Larrauri | Martini MK31-Toyota | 22 | ||
| 13 |  Slim Borgudd | March 803-Toyota | 20 | ||
| DNF |  Brett Riley | March 793-Toyota | 14 | ||
| DNF |  Roberto Guerrero | Argo JM6-Toyota | 4 | ||
| DNF |  Thierry Boutsen | Martini | Martini MK31-Toyota | 4 | |
| DNF | Piero Necchi | Martini | Martini MK27-Toyota | 4 | |
| DNF | Philippe Streiff | Martini | Martini MK31-Toyota | 4 | |
| DNF | Guido Pardini | Dallara 380-Toyota | 1 | ||
| DNF | Philippe Alliot | Martini | Martini MK31-Toyota | 0 | |