| Oct 15, 1983 | Air Force 37, UTEP 25 | Box score |
| Oct 15, 1983 | 18Arizona State 34, USC 14 | Box score |
| Oct 15, 1983 | 5Auburn 31, Georgia Tech 13 | Box score |
| Oct 15, 1983 | Ball State 17, Kent State 13 | Box score |
| Oct 15, 1983 | Bowling Green 23, Western Michigan 20 | Box score |
| Oct 15, 1983 | 20BYU 66, New Mexico 21 | Box score |
| Oct 15, 1983 | Cal State Fullerton 20, San José State 11upset | Box score |
| Oct 15, 1983 | California 45, Oregon State 19 | Box score |
| Oct 15, 1983 | Central Michigan 14, Ohio 9 | Box score |
| Oct 15, 1983 | Clemson 38, Duke 31 | Box score |
| Oct 15, 1983 | Colorado State 17, San Diego State 15upset | Box score |
| Oct 15, 1983 | East Carolina 24, Temple 10 | Box score |
| Oct 15, 1983 | 8Georgia 20, Vanderbilt 13 | Box score |
| Oct 15, 1983 | Hawai’i 23, UNLV 0 | Box score |
| Oct 15, 1983 | 19Illinois 17, 6Ohio State 13upset | Box score |
| Oct 15, 1983 | Indiana 24, Michigan State 12 | Box score |
| Oct 15, 1983 | 14Iowa 31, Purdue 14 | Box score |
| Oct 15, 1983 | Iowa State 22, Colorado 10 | Box score |
| Oct 15, 1983 | Kansas 31, Kansas State 3 | Box score |
| Oct 15, 1983 | Kentucky 21, LSU 13upset | Box score |
| Oct 15, 1983 | Long Beach State 28, Pacific 16 | Box score |
| Oct 15, 1983 | 16Maryland 36, Wake Forest 33 | Box score |
| Oct 15, 1983 | 10Miami 31, Mississippi State 7 | Box score |
| Oct 15, 1983 | 13Michigan 35, Northwestern 0 | Box score |
| Oct 15, 1983 | Ole Miss 20, TCU 7 | Box score |
| Oct 15, 1983 | 1Nebraska 34, Missouri 13 | Box score |
| Oct 15, 1983 | 3North Carolina 42, NC State 14 | Box score |
| Oct 15, 1983 | Northern Illinois 34, Eastern Michigan 15 | Box score |
| Oct 15, 1983 | Notre Dame 42, Army 0 | Box score |
| Oct 15, 1983 | 15Oklahoma 21, Oklahoma State 20 | Box score |
| Oct 15, 1983 | Oregon 19, 9Arizona 10upset | Box score |
| Oct 15, 1983 | Penn State 17, Syracuse 6 | Box score |
| Oct 15, 1983 | Pittsburgh 55, Louisville 10 | Box score |
| Oct 15, 1983 | Southern Miss 27, Memphis 20 | Box score |
| Oct 15, 1983 | Tennessee 41, 11Alabama 34upset | Box score |
| Oct 15, 1983 | 2Texas 31, Arkansas 3 | Box score |
| Oct 15, 1983 | Baylor 13, Texas A&M 13 | Box score |
| Oct 15, 1983 | Texas Tech 14, Rice 3 | Box score |
| Oct 15, 1983 | Toledo 10, Miami (OH) 9 | Box score |
| Oct 15, 1983 | Tulane 17, Louisiana 15 | Box score |
| Oct 15, 1983 | UCLA 24, Washington State 14 | Box score |
| Oct 15, 1983 | Utah 69, Wyoming 14 | Box score |
| Oct 15, 1983 | 17Washington 32, Stanford 15 | Box score |
| Oct 15, 1983 | 4West Virginia 13, Virginia Tech 0 | Box score |
| Oct 15, 1983 | Wisconsin 56, Minnesota 17 | Box score |