2015 Pac-12 Conference Leaders Passing Defense - Games in August/September Only through 01/11/2016
| Name | G | Att | Comp | Pct. | Yards | Yards/Att | TD | Int | Rating | Att/G | Yards/G | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | UCLA | 4 | 133 | 67 | 50.4 | 653 | 4.9 | 4 | 4 | 95.53 | 33.3 | 163.3 |
| 2 | Colorado | 4 | 141 | 74 | 52.5 | 774 | 5.5 | 5 | 7 | 100.36 | 35.3 | 193.5 |
| 3 | California | 4 | 121 | 62 | 51.2 | 859 | 7.1 | 2 | 9 | 101.44 | 30.3 | 214.8 |
| 4 | Washington | 4 | 139 | 78 | 56.1 | 866 | 6.2 | 2 | 5 | 106.01 | 34.8 | 216.5 |
| 5 | Oregon State | 4 | 109 | 66 | 60.6 | 612 | 5.6 | 3 | 5 | 107.63 | 27.3 | 153.0 |
| 6 | USC | 4 | 150 | 86 | 57.3 | 984 | 6.6 | 3 | 3 | 115.03 | 37.5 | 246.0 |
| 7 | Stanford | 4 | 129 | 71 | 55.0 | 794 | 6.2 | 5 | 1 | 117.98 | 32.3 | 198.5 |
| 8 | Utah | 4 | 143 | 80 | 55.9 | 954 | 6.7 | 9 | 7 | 122.96 | 35.8 | 238.5 |
| 9 | Arizona State | 4 | 106 | 55 | 51.9 | 783 | 7.4 | 8 | 4 | 131.30 | 26.5 | 195.8 |
| 10 | Arizona | 4 | 133 | 78 | 58.6 | 1047 | 7.9 | 7 | 5 | 134.62 | 33.3 | 261.8 |
| 11 | Washington State | 3 | 77 | 55 | 71.4 | 561 | 7.3 | 3 | 2 | 140.30 | 25.7 | 187.0 |
| 12 | Oregon | 4 | 159 | 102 | 64.2 | 1205 | 7.6 | 15 | 5 | 152.65 | 39.8 | 301.3 |