1931 Monaco Grand Prix Entries Entries

| Driver | Entrant | Constructor_ | Chassis | Engine |
|---|---|---|---|---|
| Ernst-Günther Burggaller | German Bugatti Team | Bugatti | Bugatti T35B | 2.3 L8 |
| Hermann zu Leiningen | German Bugatti Team | Bugatti | Bugatti T35C | 2.0 L8 |
| Heinrich-Joachim von Morgen | German Bugatti Team | Bugatti | Bugatti T35B | 2.3 L8 |
| Rudolf Caracciola | Private entry | Mercedes-Benz | Mercedes-Benz SSK L | 7.1 L6 |
| Earl Howe | Private entry | Bugatti | Bugatti T51 | 2.3 L8 |
| Clifton Penn-Hughes | Private entry | Bugatti | Bugatti T35 | 2.0 L8 |
| Henry Birkin | Private entry | Maserati | Maserati 26M | 2.5 L8 |
| Bernhard Ackerl | Private entry | Bugatti | Bugatti T37 | 1.5 L4 |
| Juan Zanelli | Private entry | Bugatti | Bugatti T35B | 2.3 L8 |
| Guy Bouriat | Automobiles Ettore Bugatti | Bugatti | Bugatti T51 | 2.3 L8 |