Supporting our clients’ success drives us.

At The Hannon Group, our track record demonstrates consistently excellent service that enables organizations to succeed. Here are some of the distinguished clients who trust us to handle their market research and communications needs.

Advertising-PR Agencies and Management Consulting Firms

  • Arnold Worldwide
  • Atwater Communications
  • Cordy and Company
  • FHi360 (formerly AED)
  • GMMB
  • ICF International
  • Integrated Designs
  • Keenan PR
  • MAYA Advertising & Communications
  • Mhley/Davis & Associates
  • Ogilvy and Mather Advertising Agency
  • The Sutter Group
  • University Research Corporation (URC)
  • Walls Communications
  • Washington Partners, LLC



  • Centers for Disease Control and Prevention
  • Center for Substance Abuse Prevention
  • Department of Energy
  • National Institutes of Health
  • National Institute of Occupational Safety and Health
  • US Department of Education
  • US Department of Health and Human Services
  • White House Office of National Drug Control Policy



  • American Academy of Ophthalmologists
  • American Association of Colleges of Pharmacy
  • American Society of Civil Engineers
  • CPWR, formerly Center for Construction Training
  • Family Connection Partnership, Inc.
  • Independent Public Relations Alliance
  • National Sleep Foundation
  • Partnership for a Drug-Free America
  • Public Relations Society of America (National Capital Chapter)
  • United States Tennis Assoc./Mid-Atlantic Section


Private Sector

  • 1st Choice Staffing and Consulting Agency
  • ABC Dentistry
  • Academy for Educational Development
  • AT&T
  • Body Productions, Inc. Fitness and Sports Rehabilitation
  • DRE Partners
  • Duron Paint and Wallcoverings, Inc.
  • General Motors
  • House of Design
  • RGF Consulting Corporation
  • Reid Consulting
  • Residential Mortgage Company
  • SWATH Leadership
  • Visions Art Gallery
  • xG Technology


Pro Bono

  • Center for Child Protection and Family Support, Washington, D.C.



  • Bowie State University
  • Howard University
  • Southeastern University
  • University of Vermont