| Flag: | Victoria |
| 2012 Phillip Island 300 | |
| Round No: | 5 |
| Season No: | 15 |
| Year: | 2012 |
| Series: | IVSC |
| Track Map: | Phillip Island Grand Prix Circuit.svg |
| Date: | 18–20 May |
| Location: | Phillip Island, Victoria |
| Circuit: | Phillip Island Grand Prix Circuit |
| Weather: | Fine |
| Race1 Laps: | 32 |
| Race1 Dist: | 140 |
| Pole1: | Mark Winterbottom |
| Pole1 Team: | Ford Performance Racing |
| Pole1 Time: | 1:32:1320 |
| Winner1: | Mark Winterbottom |
| Winner1 Team: | Ford Performance Racing |
| Winner1 Time: | 55:50:2117 |
| Race2 Laps: | 45 |
| Race2 Dist: | 200 |
| Pole2: | Craig Lowndes |
| Pole2 Team: | Triple Eight Race Engineering |
| Pole2 Time: | 1:32:3167 |
| Winner2: | Will Davison |
| Winner2 Team: | Ford Performance Racing |
| Winner2 Time: | 1:19:46:1086 |
The 2012 Phillip Island 300 was a motor race for the Australian sedan-based V8 Supercars. It was the fifth event of the 2012 International V8 Supercars Championship. It was held on the weekend of 18–20 May at the Phillip Island Grand Prix Circuit, in Phillip Island, Victoria.
The event was the second in a row in which Ford Performance Racing dominated with Mark Winterbottom winning the Saturday race and Will Davison winning the Sunday race. Although the FPR duo won both races, Shane van Gisbergen was the best performed driver over the whole weekend.
| Pos | No | Name | Team | Points | |
|---|---|---|---|---|---|
| 1 | 6 |  Will Davison | Ford Performance Racing | 1216 | |
| 2 | 1 | Jamie Whincup | Triple Eight Race Engineering | 1206 | |
| 3 | 5 | Mark Winterbottom | Ford Performance Racing | 1187 | |
| 4 | 888 | Craig Lowndes | Triple Eight Race Engineering | 977 | |
| 5 | 9 |  Shane van Gisbergen | Stone Brothers Racing | 953 |