| Year: | 1991 |
| Team: | Texas Tech Red Raiders |
| Sport: | football |
| Conference: | Southwest Conference |
| Short Conf: | SWC |
| Record: | 6–5 |
| Conf Record: | 5–3 |
| Head Coach: | Spike Dykes |
| Hc Year: | 5th |
| Off Coach: | Dick Winder |
| Oc Year: | 5th |
| Off Scheme: | No-huddle spread |
| Def Coach: | Carlos Mainord |
| Dc Year: | 5th |
| Def Scheme: | 3–4 |
| Stadium: | Jones Stadium |
The 1991 Texas Tech Red Raiders football team represented Texas Tech University as a member of the Southwest Conference (SWC) during the 1991 NCAA Division I-A football season. In their fifth season under head coach Spike Dykes, the Red Raiders compiled a 6–5 record (5–3 against SWC opponents), finished in a tie for second place in the conference, and outscored opponents by a combined total of 315 to 272.[1] The team played its home games at Clifford B. and Audrey Jones Stadium in Lubbock, Texas.