Juan Fangio won the Argentine Grand Prix 1957 at Autódromo Juan y Oscar Gálvez on 13 January 1957, starting from P2 on the grid. Jean Behra finished second for Maserati, with Carlos Menditeguy completing the podium for Maserati.
| Pos | Grid | Driver | Team | Laps | Time / Status | Pts | FL |
|---|---|---|---|---|---|---|---|
| 1 | 2 | Juan FangioFAN | Maserati | 100 | 3:00:55.9 | 8 | |
| 2 | 3 | Jean BehraBEH | Maserati | 100 | +18.3 | 6 | |
| 3 | 8 | Carlos MenditeguyMEN | Maserati | 99 | +1 Lap | 4 | |
| 4 | 9 | Harry SchellSCH | Maserati | 98 | +2 Laps | 3 | |
| 5 | 10 | Alfonso de PortagoDEP | Ferrari | 98 | +2 Laps | 1 | |
| 5 | 10 | José Froilán GonzálezGON | Ferrari | 98 | +2 Laps | 1 | |
| 6 | 11 | Cesare PerdisaPER | Ferrari | 98 | +2 Laps | 0 | |
| 6 | 11 | Peter CollinsCOL | Ferrari | 98 | +2 Laps | 0 | |
| 6 | 11 | Wolfgang von TripsVON | Ferrari | 98 | +2 Laps | 0 | |
| 7 | 13 | Jo BonnierBON | Maserati | 95 | +5 Laps | 0 | |
| 8 | 1 | Stirling MossMOS | Maserati | 93 | +7 Laps | 1 | |
| 9 | 12 | Alessandro de TomasoDET | Ferrari | 91 | +9 Laps | 0 | |
| 10 | 14 | Luigi PiottiPIO | Maserati | 90 | +10 Laps | 0 | |
| R | 4 | Eugenio CastellottiCAS | Ferrari | 75 | Wheel | 0 | |
| R | 7 | Mike HawthornHAW | Ferrari | 35 | Clutch | 0 | |
| R | 6 | Luigi MussoMUS | Ferrari | 31 | Clutch | 0 | |
| R | 5 | Peter CollinsCOL | Ferrari | 26 | Clutch | 0 |