2018 Big 12 Conference Leaders Passing Defense - Games in August/September Only through 01/07/2019
| Name | G | Att | Comp | Pct. | Yards | Yards/Att | TD | Int | Rating | Att/G | Yards/G | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | West Virginia | 4 | 125 | 73 | 58.4 | 851 | 6.8 | 4 | 4 | 119.75 | 31.3 | 212.8 |
| 1 | Texas | 5 | 173 | 95 | 54.9 | 1091 | 6.3 | 4 | 6 | 108.57 | 34.6 | 218.2 |
| 3 | Iowa State | 4 | 114 | 70 | 61.4 | 849 | 7.4 | 5 | 2 | 134.91 | 28.5 | 212.3 |
| 3 | Oklahoma | 5 | 166 | 102 | 61.4 | 1262 | 7.6 | 5 | 4 | 130.43 | 33.2 | 252.4 |
| 5 | TCU | 5 | 155 | 83 | 53.5 | 890 | 5.7 | 6 | 2 | 111.97 | 31.0 | 178.0 |
| 6 | Kansas | 5 | 136 | 79 | 58.1 | 1012 | 7.4 | 8 | 8 | 128.24 | 27.2 | 202.4 |
| 7 | Kansas State | 5 | 191 | 109 | 57.1 | 1152 | 6.0 | 11 | 4 | 122.54 | 38.2 | 230.4 |
| 7 | Oklahoma State | 5 | 196 | 126 | 64.3 | 1310 | 6.7 | 11 | 3 | 135.90 | 39.2 | 262.0 |
| 7 | Texas Tech | 5 | 195 | 108 | 55.4 | 1506 | 7.7 | 11 | 4 | 134.78 | 39.0 | 301.2 |
| 10 | Baylor | 5 | 153 | 90 | 58.8 | 1158 | 7.6 | 13 | 2 | 147.83 | 30.6 | 231.6 |