| UAC TRANS AMERICA LLCBrownsville, TX | 2895928 | 1 |
| UCSA TRANSPORT LLCKermit, TX | 4065084 | 4 |
| UDENNA LLCKaty, TX | 4189571 | 1 |
| UG3 LOGISTICS LLCMission, TX | 3672390 | 5 |
| UHW TRANSPORTATION LLCElgin, TX | 3213429 | 2 |
| ULTAS LLCPearland, TX | 4428605 | 1 |
| UMC LOGISTICS LLCHouston, TX | 4050194 | 2 |
| UMGA LOGISTICS INCDallas, TX | 2307400 | 17 |
| UNDERWOOD UNITY LLCPlano, TX | 4460934 | 1 |
| UNICORN EXPRESS LLCHouston, TX | 1814635 | 4 |
| UNIFIED INTERMODAL TRANSPORT INCHouston, TX | 2156918 | 50 |
| UNIFREIGHT TRUCKING LLCMission, TX | 2473958 | 8 |
| UNIGUS STEEL INCDallas, TX | 1859504 | 1 |
| UNIMEX LOGISTICS LLCPharr, TX | 1970020 | 310 |
| UNIMEX TRADE & LOGISTICS LLCLaredo, TX | 3519996 | 3 |
| UNION CARBIDE CORPORATIONHouston, TX | 24812 | 41 |
| UNION CONTINENTAL LLCLaredo, TX | 3937291 | 2 |
| UNIQUE COURIER SERVICE CORPORATIONHouston, TX | 1484229 | 76 |
| UNIQUE DFW ENTERPRISES INCGrapevine, TX | 4148702 | 22 |
| UNIQUE DRIVERS LLCHouston, TX | 3636261 | 2 |
| UNIQUE GREEN LEAF LLCMesquite, TX | 4506373 | 1 |
| UNIQUE LEASING INCSan Antonio, TX | 363676 | 208 |
| UNIQUE TRUCKING SERVICES LLCOdessa, TX | 2334368 | 1 |
| UNITED BILLING SOLUTIONS LLCHouston, TX | 3176294 | 1 |
| UNITED CARGO EXPRESS INCPlano, TX | 3711435 | 1 |
| UNITED DELIVERY SERVICE LLCKilleen, TX | 3846743 | 1 |
| UNITED DIRECTIONAL DRILLING LLCWeslaco, TX | 2361085 | 2 |
| UNITED LOGISTICS LLCArlington, TX | 1899642 | 6 |
| UNITED MARATHON TRANSPORTATION LLCCibolo, TX | 4015156 | 5 |
| UNITED PIPE & STEEL CORPHouston, TX | 208170 | 63 |
| UNITED ROAD FREIGHT LLCEl Paso, TX | 3839135 | 1 |
| UNITED STATES BOWLING CONGRESSArlington, TX | 348827 | 2 |
| UNITED TOWS LLCDallas, TX | 2193171 | 2 |
| UNITED TRANSPORTATION LLCMission, TX | 3994548 | 6 |
| UNITED TRUCKING LLCSpring, TX | 3338166 | 16 |
| UNITED UPTIME SERVICES INCHumble, TX | 486104 | 22 |
| UNITEDWS INCSpring, TX | 3431464 | 93 |
| UNIVERSAL LOADS LLCNacogdoches, TX | 3033712 | 4 |
| UNIVERSE TRANSPORT LLCSan Elizario, TX | 3616727 | 7 |
| UNLIMITED RESOURCE LLCOdessa, TX | 4291636 | 2 |
| UNLIMITED TRUCKING INCHouston, TX | 312894 | 10 |
| UPGRADED LLCThe Colony, TX | 4456560 | 2 |
| UPPER ECHELON TRANSPORTATION LLCSweeny, TX | 4056164 | 1 |
| UPRAISE LLCPlano, TX | 3933420 | 1 |
| UR LOAD LLCSomerset, TX | 4037072 | 1 |
| URSO TRANSPORT INCRowlett, TX | 3096982 | 2 |
| US AUTOLOGISTICS, L.L.C.Houston, TX | 357779 | 382 |
| US BLUE SKY TRANSPORTATION LLCFort Worth, TX | 4144275 | 14 |
| US CONTRACT TRUCKING LLCIrving, TX | 227640 | 31 |
| US FRAC LLCMidland, TX | 3070545 | 4 |
| US FRONTIER INCFortworth, TX | 1083162 | 2 |
| US GREEN LAND TRANSPORTATION LLCFort Worth, TX | 4282250 | 11 |
| US LOGISTICS LINK LLCIrving, TX | 3687165 | 2 |
| US MEX TRANSPORTATION LLCLaredo, TX | 2055156 | 1 |
| US OIL RECOVERY LPPasadena, TX | 1948974 | 4 |
| US PORTION LLCLaredo, TX | 3006028 | 35 |
| US REPUBLIC TRANSPORT LLCSan Marcos, TX | 3872412 | 1 |
| US STAR TRUCKING LLCFort Worth, TX | 3895838 | 5 |
| US TRUCKLINES LLCHouston, TX | 3426019 | 3 |
| US-TRUSTED TRUCKING SERVICES LLCHouston, TX | 3915397 | 1 |
| USA DEBUSK LLCDeer Park, TX | 2297953 | 779 |
| USA EAGLE TRUCKING INCHaltom City, TX | 4417165 | 4 |
| USA LOGISTICS AND CARRIER LLCSan Juan, TX | 4360239 | 8 |
| USA TOP ROADS LLCMissouri City, TX | 8149189 | 3 |
| USA TRANSPORT LLCHouston, TX | 3850945 | 1 |
| USA TRUCKING LLCGarland, TX | 3956843 | 5 |
| USA VETERANS LOGISTICS LLCKilleen, TX | 4101399 | 1 |
| USE US LLCSan Antonio, TX | 4280116 | 2 |
| USS EXPRESS LLCKaty, TX | 3690342 | 2 |
| USS TRANSPORTATION INCRichmond, TX | 2919704 | 3 |
| UTG LOAD EXPRESS LLCHouston, TX | 4448417 | 2 |
| UTL LOGISTICS LLCHouston, TX | 3793180 | 2 |
| UWAZI TRANSPORT LLCIrving, TX | 4378476 | 1 |