| Business | Phone |
| Marathon Oil Co County Road 234, Giddings 78942 | (979) 542-1486 |
| Mission Resources 1005 County Road 217, Giddings 78942 | (979) 542-0090 |
| Anadarko Petroleum Corp 404 E Independence St, Giddings 78942 | (979) 542-2054 |
| Bryan Hot Oil Svc Hwy 290 E, Giddings 78942 | (979) 542-5296 |
| South Texas Oil Field Supplies Hwy 77 S, Giddings 78942 | (979) 542-5591 |