- Archaeological Consulting Services (ACS)
 - Specialising in the prehistoric and historic archaeology of New England. Services include reconnaissance surveys, data recovery, and research. - Archaeological Resource Service
- Offers consultation and services to developers and planners involving historic and prehistoric cultural resources in the San Francisco Bay area.
- Columbia Geotechnical Associates
- Consulting geoscientists specialising in contract geotechnical and soil science, geoarchaeology, erosion analysis, and GIS and GPS applications.
- Cultural Resource Analysts, Inc
- Contract Archaeology and cultural resource management consulting.
- Dos Rios Consultants, Inc.
- Provides consulting services in the social and natural sciences across the Southwest including archaeology, social impact studies, water rights, GIS/GPS applications and historical research.
- Heritage Research Center, Ltd
- Historical research, archaeology survey and information management services. Site history and corporate history applied to natural resource management and historical information needs.
- Horizon Research Consultants, Inc.
- Cultural resource management firm specialising in archaeology, anthropology, and historic structure assessment.
- KIVU Nature Inc.
- Canadian organisation forging guidelines to integrate environmental assessments and traditional knowledge for development projects and implementation.
- Land Use Research, Inc.
- A cultural resource consulting firm in Fairbanks, Alaska. Providing services in archaeology, history, anthropology, survey, research, computer graphics, mapping, assessments and more.
- Lang Hall Archaeology Services
- Archaeological services for private or public companies, offering surveys, planning consultation and training, with field or desktop studies.
- SouthArc, Inc.
- Provides archaeological and historical consulting services.
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