| Overview | Grid | Race Entries |
| Race | Qualifying |
| Race Name: | X Grande Prêmio do Brasil |
| Track: | Autódromo Internacional do Rio de Janeiro |
| Round: | 2 of 15 |
| Race date: | Sunday, March 29th, 1981 |
| Race time: | 14.00 |
| 1st | 2nd | 3rd | |
| Driver | Carlos Reutemann | Alan Jones | Riccardo Patrese |
| Constructor | Williams-Ford Cosworth | Williams-Ford Cosworth | Arrows-Ford Cosworth |
| Car | Williams FW07C | Williams FW07C | Arrows A3 |
| Engine | Ford Cosworth DFV | Ford Cosworth DFV | Ford Cosworth DFV |
| Tyre | Michelin | Michelin | Michelin |
| Time | 2:00:23.660 | 2:00:28.100 | 2:01:26.740 |
| Gap | 4.440 secs | 1m 3.080 secs |