National Leaders
Largest Engineering Firms in the US
The largest engineering firms in the US — ENR Top 500 leaders, multidisciplinary design giants, and national consultancies delivering infrastructure, buildings, and industrial projects.
National engineering leaders
AECOM
HQ: Dallas, TX
Infrastructure, buildings, environment
Jacobs
HQ: Dallas, TX
Critical infrastructure, water, energy
WSP USA
HQ: New York, NY
Transportation, buildings, environment
Stantec
HQ: Edmonton / US offices nationwide
Water, buildings, infrastructure
HDR
HQ: Omaha, NE
Transportation, water, healthcare
Burns & McDonnell
HQ: Kansas City, MO
Power, aviation, oil & gas
Kimley-Horn
HQ: Raleigh, NC
Transportation, land development
Black & Veatch
HQ: Overland Park, KS
Energy, water, telecom
Tetra Tech
HQ: Pasadena, CA
Water, environment, infrastructure
Parsons
HQ: Chantilly, VA
Infrastructure, defense, transportation
HNTB
HQ: Kansas City, MO
Transportation, aviation, bridges
Michael Baker International
HQ: Pittsburgh, PA
Transportation, water, federal
Related
FAQ
What ranks the largest engineering firms?
ENR (Engineering News-Record) publishes the Top 500 Design Firms list annually, ranking firms by global design revenue. AECOM, Jacobs, and WSP have led recent years.
Do the largest firms work on small projects?
Most ENR Top 500 firms focus on mid-to-large public and institutional work. For residential or small commercial projects, regional mid-size firms or boutique specialists are typically a better fit.
Are national engineering firms licensed in every state?
Major firms maintain PE licensure and firm registration in every state they pursue work in. Always verify the project-state license before contracting.