1998 Season Releases
- Football Releases1998 Results
| Date | Opponent | Site | TV | Time | Event | Results |
| Aug. 30 | at USC | Los Angeles | ABC | 11:35 a.m. EST | Pigskin Classic | L, 27-17 Recap | Stats |
| Sept. 12 | Rice | West Lafayette | ESPN | 11:10 a.m. EST | W, 21-19 Recap | Stats | Notes | |
| Sept. 19 | Central Florida | West Lafayette | ESPN | 11:10 a.m. EST | Parents' Day/Band Day | W, 35-7 Recap | Stats |
| Sept 26 | at Notre Dame | South Bend, IN | NBC | 1:30 p.m. EST | L, 31-30 Recap | Stats | Quotes | |
| Oct. 3 | Minnesota | West Lafayette | 1:00 p.m. EST | P-Awards, Hall of Fame | W, 56-21 Recap | Stats | |
| Oct. 10 | at Wisconsin | Madison | ESPN2 | 7:30 p.m. CDT | L, 31-24 Recap | Stats | |
| Oct. 17 | at Penn State | Happy Valley, PA | ABC | 3:30 p.m. EDT | L, 31-13 Recap | Stats | |
| Oct. 24 | Illinois | West Lafayette | 1:00 EST | Homecoming | W, 42-9 Recap | Stats | |
| Oct. 31 | Iowa | West Lafayette | 1:00 p.m. EST | W, 36-14 Recap | Stats | ||
| Nov. 7 | at Northwestern | Evanston, IL | ESPN+ | 12:10 a.m. EST | W, 56-21 Recap | Stats | |
| Nov. 14 | at Michigan State | East Lansing | ESPN+ | 12:10 p.m. EST | W, 25-24 Recap | Stats | |
| Nov. 21 | Indiana | West Lafayette | 1 p.m. EST | W, 52-7 Recap | Stats | ||
| Dec. 28 | Kansas State | San Antonio, Texas | ESPN | 6:30 p.m. EST | Alamo Bowl | W, 37-34 Recap | Stats |