| Sep 23, 1983 | Oklahoma State 34, Texas A&M 15 | Box score |
| Sep 24, 1983 | 6Alabama 44, Vanderbilt 24 | Box score |
| Sep 24, 1983 | 4Arizona 27, Cal State Fullerton 10 | Box score |
| Sep 24, 1983 | Arizona State 44, Wichita State 14 | Box score |
| Sep 24, 1983 | 11Auburn 37, Tennessee 14 | Box score |
| Sep 24, 1983 | Bowling Green 17, Miami (OH) 14 | Box score |
| Sep 24, 1983 | BYU 46, Air Force 28 | Box score |
| Sep 24, 1983 | Central Michigan 32, Western Michigan 14upset | Box score |
| Sep 24, 1983 | Clemson 41, Georgia Tech 14 | Box score |
| Sep 24, 1983 | Colorado 38, Oregon State 14 | Box score |
| Sep 24, 1983 | 15Florida 35, Mississippi State 12 | Box score |
| Sep 24, 1983 | Fresno State 34, Pacific 14 | Box score |
| Sep 24, 1983 | 14Georgia 31, South Carolina 13 | Box score |
| Sep 24, 1983 | Illinois 20, Michigan State 10 | Box score |
| Sep 24, 1983 | 7Iowa 20, 3Ohio State 14upset | Box score |
| Sep 24, 1983 | Iowa State 21, Colorado State 17 | Box score |
| Sep 24, 1983 | Kansas 26, 10USC 20upset | Box score |
| Sep 24, 1983 | Kansas State 27, Wyoming 25 | Box score |
| Sep 24, 1983 | Kentucky 26, Tulane 14 | Box score |
| Sep 24, 1983 | LSU 40, 9Washington 14upset | Box score |
| Sep 24, 1983 | Maryland 13, 16Pittsburgh 7upset | Box score |
| Sep 24, 1983 | Miami 20, 13Notre Dame 0upset | Box score |
| Sep 24, 1983 | 17Michigan 38, Wisconsin 21 | Box score |
| Sep 24, 1983 | Ole Miss 13, Arkansas 10upset | Box score |
| Sep 24, 1983 | Missouri 17, Utah State 10 | Box score |
| Sep 24, 1983 | 1Nebraska 42, UCLA 10 | Box score |
| Sep 24, 1983 | New Mexico 31, New Mexico State 10 | Box score |
| Sep 24, 1983 | Northern Illinois 38, Kent State 7 | Box score |
| Sep 24, 1983 | Northwestern 10, Indiana 8upset | Box score |
| Sep 24, 1983 | Ohio 31, Eastern Michigan 14 | Box score |
| Sep 24, 1983 | 8Oklahoma 28, Tulsa 18 | Box score |
| Sep 24, 1983 | Oregon 15, Houston 14 | Box score |
| Sep 24, 1983 | Penn State 23, Temple 18 | Box score |
| Sep 24, 1983 | Purdue 32, Minnesota 20 | Box score |
| Sep 24, 1983 | Rice 22, Louisiana 21 | Box score |
| Sep 24, 1983 | San Diego State 41, UTEP 33 | Box score |
| Sep 24, 1983 | San José State 23, Stanford 10 | Box score |
| Sep 24, 1983 | 18SMU 21, TCU 17 | Box score |
| Sep 24, 1983 | Syracuse 17, Rutgers 13 | Box score |
| Sep 24, 1983 | Texas Tech 26, Baylor 11upset | Box score |
| Sep 24, 1983 | Toledo 43, Ball State 7 | Box score |
| Sep 24, 1983 | Utah 28, Hawai’i 25 | Box score |
| Sep 24, 1983 | Virginia 26, NC State 14upset | Box score |
| Sep 24, 1983 | Washington State 41, UNLV 28 | Box score |
| Sep 24, 1983 | 12West Virginia 27, 19Boston College 17 | Box score |