| Date: | Tuesday, 1 May 2012 |
| Session: | Day 1 (of 3) |
| Track: | Mugello |
| Track length: | 5.245 km |
| Weather: | Overcast, with rain at times in the morning, rain, some heavy, in the afternoon (Air: 16-22°C, Track: 17-34°C) |
| News article: | Mugello: Day 1 driver and team personnel quotes Alonso leads on rain-hit first day in Mugello |
| P | Driver | Constructor | Car | T | Time | Gap | Avg Speed | Laps |
| 1 | Fernando Alonso | Ferrari | F2012 | P | 1:22.444 | 229.028 | 46 | |
| 2 | Mark Webber | Red Bull-Renault | RB8 | P | 1:23.648 | 1.204 | 225.732 | 24 |
| 3 | Jean-Éric Vergne | Toro Rosso-Ferrari | STR7 | P | 1:23.891 | 1.447 | 225.078 | 32 |
| 4 | Jérôme d'Ambrosio | Lotus-Renault | E20 | P | 1:24.048 | 1.604 | 224.657 | 40 |
| 5 | Nico Rosberg | Mercedes | W03 | P | 1:24.100 | 1.656 | 224.518 | 49 |
| 6 | Kamui Kobayashi | Sauber-Ferrari | C31 | P | 1:24.736 | 2.292 | 222.833 | 48 |
| 7 | Oliver Turvey | McLaren-Mercedes | MP4-27 | P | 1:25.303 | 2.859 | 221.352 | 30 |
| 8 | Jules Bianchi | Force India-Mercedes | VJM05 | P | 1:25.475 | 3.031 | 220.907 | 19 |
| 9 | Rodolfo González | Caterham-Renault | CT01 | P | 1:27.197 | 4.753 | 216.544 | 35 |
| 10 | Charles Pic | Marussia-Cosworth | MR01 | P | 1:27.359 | 4.915 | 216.143 | 45 |
| 11 | Valtteri Bottas | Williams-Renault | FW34 | P | 1:29.179 | 6.735 | 211.731 | 28 |
| 12 | Gary Paffett | McLaren-Mercedes | MP4-27 | P | 1:50.898 | 28.454 | 170.265 | 4 |
| 13 | Michael Schumacher | Mercedes | W03 | P | No Time | 5 |