* Civildesign Corporation - Providing civil engineering, construction, surveying, hydrological and consulting services.
* Clark Civil, Structural, Environmental Engineering and Surveying, P.C . - Progressive civil, environmental, structural and land surveying woman-owned consulting firm.
* Clark Engineers, Inc- Provides civil, construction, environmental, landscape, mechanical and structural engineering services.
* Cleveland Bridge - Worldwide engineering company.
* Clovemead Limited - Specialist construction company, offering a building maintenance services to petrolium companies and related retailers.
* Coe and Van Loo Consultants, Inc . - Offering a variety of engineering services including land planning, civil engineering, water resources, environmental sciences, landscape architecture and surveying.
* Compass Engineering - Providing professional civil engineering, surveying, and planning services to clients' in Oregon and Washington since 1968.
* C.S. Davidson, Inc . - Providing a broad range of highest-quality civil engineering services to municipal and private clients in South Central Pennsylvania.
* Cumming Cockburn Limited - Offering a wide range of consulting services, including municipal engineering, transportation engineering, land development and community planning, water resources and environmental studies, small hydro bridges, and marine structures and coastal engineering services.
