- Thrasher Engineering Inc
- Thrasher Engineering Inc
- THY Inc
- THY Inc
- Tim Bennett Engineering
- Tim Bennett Engineering
- Timmon's Consulting
- Timmons
- Timmons Group
- Timmons Group Inc
- TNC Engineering
- TNT Engineering
- Tom Hendershot PE
- Trane Engineering
- Travis Associates Consulting
- Travis Associates Consulting
- Trepanier Engineering
- Tri-Tek Engineering Inc
- Triad Engineering Inc
- Triad Project Corp
- Trico Engineering Consultants
- Trifone Design Assoc
- Triton Engineers Inc
- Trowbridge Engineering Co
- Trudell Consulting Engineers
- TSP Two Inc
- Tuck Mapping Solutions
- Turner Collie & Braden Inc
- Turner Collie & Braden Inc
- Turner Collie & Braden Inc
- Two Rivers Engineering
- U S Infrastructure Inc
- Unichat Networks Inc
- Urban Engineering
- Urban Engineering & Assoc Inc
- Urban Engineering Inc
- URS Corp
- URS Corp
- USKH
- Utiliscope Corp
- Utility Mapping Svc UMS
- V & K Design Group
- Vallee & Assoc
- Valley Engineering Surveying
- Valley West Enginering
- Van Wagoner & Assoc
- Vanasse Hangen Brustlin
- Vanasse Hangen Brustlin Inc
- Vanasse Hangen Burstlin
- Varela & Assoc Inc
- Vaugh & Melton Consulting Engr
- Vaughn & Melton Engineering
- Venture Engineering Inc
- Versar Inc
- Versar Inc
- Versar Inc
- VHB
- Vick Engineering
- Vickrey & Assoc Inc
- Vickrey & Assoc Inc
- Vickrey & Assoc Inc
- VIKA Inc
- Villaverde Inc
- Vision Engineering & Dev Svc
- Vogt Engineering
- W Byrd LA Prade Inc
- W C Whaley Inc
- W K Dickson & Co Inc
- W W Assoc Inc
- W W Assoc Inc
- Wae Design Group
- Wallace Group Inc
- Wallis Engineering
- Wallis Engineering
- Walter L Phillips Inc
- Walter Nelson & Assoc
- Walter Nelson & Assoc
- Wamble & Assoc
- Ward Engineering Assoc
- Ward Engineering Group
- Warner Engineering
- Washington Group Intl
- Washington Infrastructure Svc
- Waterman Design Assoc Inc
- Watson & Assoc Of Midland
- Watson Engineering Co
- Wayne Haefele & Assoc
- Wcc Engineering LLC
- Weakley Brothers Engineering
- WEBB & Assoc
- WEBB Consulting Group Inc
- WECO Engineering
- Welch Comer & Assoc Inc
- West Texas Consultants
- Western Engineers Inc
- Western Research & Development
- Western Surveyors Inc
- Wheeler Jackson & Ferrell Inc
- Whipple Consulting Engineers
- Whitman & Bingham Assoc
- Whitman & Bingham Assoc LLC
- Whitten Civil Engineering Inc
- Wide Water Consulting
- Wiedeman & Singleton Inc
- Wier & Assoc
- Wier & Assoc
- Wier & Assoc
- Wilbur Smith Assoc
- Wilding Engineering
- Wiles Mensch Corp
- Wiles Mensch Corp
- Willadsen Lund Engineering
- William H Gordon Assoc
- William H Gordon Assoc Inc
- William H Gordon Assoc Inc
- Williams Engineering Co
- Williams Engineering Co
- Winkelmann & Assoc
- Wise & Assoc
- WOLZ & Assoc
- Woods & Co Civil Engineering
- Worthington Lenhart Carpenter
- Wright Consulting Svc
- Wright Engineering
- WTW & Garver
- WWC Engineering
- Yerka Engineering Assoc
- Youngblood Tyler & Assoc
- Zenovic & Assoc Inc
- Zicht Engineering LTD
- Zwinggi Engineering-Planning
