Circuit de Monaco (1986-1996) Results from the 1991 Monaco Grand Prix Formula Three held at Monte Carlo on May 11, 1991, in the Circuit de Monaco.
Classification
| Pos | Driver | Constructor | Laps | Time/Retired |
| 1 |  Jörg Müller | Reynard 913-Volkswagen | 24 | 39.28,194 |
| 2 | Klaus Panchyrz | Ralt RT35-Volkswagen | 24 | 39.51,494 |
| 3 |  Max Angelelli | Dallara F391-Alfa Romeo | 24 | 40.06,738 |
| 4 | Andrea Gilardi | Dallara F391-Volkswagen | 24 | 40.08,869 |
| 5 |  Yvan Muller | Reynard 913-Alfa Romeo | 24 | 40.09,806 |
| 6 | Christophe Bouchut | Ralt RT33-Volkswagen | 24 | 40.10,080 |
| 7 | Giambattista Busi | Dallara F391-Volkswagen | 24 | 40.29,505 |
| 8 | Éric Chéli | Reynard 913-Alfa Romeo | 24 | 40.32,416 |
| 9 | Jean-Christophe Boullion | Ralt RT33-Volkswagen | 24 | 40.32,891 |
| 10 | Paolo Coloni | Ralt RT35-Alfa Romeo | 24 | 40.33,838 |
| 11 | Marco Werner | Ralt RT35-Opel | 24 | 40.45,665 |
| 12 |  Antonio Stefani | Dallara F391-Alfa Romeo | 24 | 40.48,576 |
| 13 | Max Papis | Dallara F391-Alfa Romeo | 24 | 40.57,299 |
| 14 | Giampiero Simoni | Dallara F391-Alfa Romeo | 24 | 41.00,272 |
| 15 | Michel Raffaelli | Dallara F389-Alfa Romeo | 23 | |
| 16 | Niko Palhares | Dallara F391-Volkswagen | 21 | |
| DNF | Arnaud Trevisiol | Dallara F391-Opel | 8 | |
| DNF | .svg.png) Jacques Villeneuve | Ralt RT35-Alfa Romeo | 4 | |
| DNF | Laurent Daumet | Ralt RT35-Volkswagen | 4 | |
| DNF | Wolfgang Kaufmann | Dallara F391-Opel | 3 | |
| DNF |  Tom Kristensen | Ralt RT35-Volkswagen | 1 | |
| DNF | Fabrizio De Simone | Dallara F391-Alfa Romeo | 0 | |
| DNF | Guillaume Gomez | Ralt RT35-Alfa Romeo | 0 | |
| DNF | Andrea Larini | Dallara F391-Alfa Romeo | 0 | |
| DNF | Olivier Panis | Ralt RT35-Alfa Romeo | 0 | |
| DNF |  Olivier Beretta | Reynard 913-Mugen | 0 | |