- C Evans Consulting LLC
- C R Market Surveys Inc
- C. Garbin & Associates, LLC
- C. J. Seto Support Services, LLC
- C. Mistric Surveyor’s, Inc.
- C & C Dean Family Enterprises LLC [DBA Once Upon an RFP]
- C&C Contracting, Inc.
- C-Cat, Inc.
- C.D.G. Systemic Solutions Corporation
- Cabildo Staffing, L.L.C.
- Cabin John Consulting Corp
- Cabletime, Ltd.
- Cadence Communications & Research
- Call Your Assistant LLC [DBA CYA Mobility]
- Callahan Construction Company, Inc.
- Caltronics Circuits, LLC
- Cameo Consulting Group, LLC
- Cannon Utility Services, LLC
- Cannsult, Inc
- Cantle Technology Corporation
- Canyon State Inspection, Inc.
- Capital Investing Inc [DBA C I Transportation Services]
- Capital Recovery Group Technologies, LLC [DBA CRG Automation]
- Capital Strategic Solutions, LLC
- Capitol Barricade, Inc.
- Capitol Management Consulting Services, Inc
- Caption First, Inc.
- Captivating Signs, LLC
- Captura Group, Inc.
- Cardinal Technology Solutions, Inc.
- Care Publications, Inc.
- Careerstone Group LLC
- Carey & Company, Ltd.
- Carlos L. Lopez & Associates
- Carlyn Davis Casting & Productions Services Inc.
- Carmichael, Brasher, Tuvell & Company, PC.
- Carolina Group Properties LLC
- Carpet Resources Inc
- Carter-Hazel & Associates, Inc.
- Cartridge Technologies, Inc.
- CAS Consultants, Inc.
- Cascade Asset Management LLC
- CASE Healthcare Solutions, Inc.
- CATVIDEO, Inc
- CBT LLC
- CC&C Management Services LLC
- CCM Consulting Group LLC
- CCN International, Inc.
- CCS International, Inc.
- CEEC Solutions, LLC
- Celerens, LLC
- Celltein LLC
- Cemco-Custom Environmental Management Co., Inc.
- Cenetric Network Services, Inc.
- Cenmed Enterprises Inc.
- Centech Staffing LLC
- Center for Clear Communication Inc
- Center For Coaching Solutions LLC
- Centerline Associates, LLC
- Centerpoint Strategic Business Services, LLC
- Central Research Inc
- CentralCare, Inc.
- Cera Products, Inc
- CERAU Solutions LLC
- Certifi, Inc.
- Cerven Solutions, Inc
- CeteraMarketing, LLC
- cFocus Software Incorporated
- ChainBlock Company LLC, The
- Chamorro & Chamorro Trading, LLC
- Champion Sales LLC
- Character Development & Leadership, LLC
- Chemco Industries, Inc.
- Chesapeake Healthcare Planning LLC
- Chief Technologies LLC
- Chinook Systems Inc.
- Chivine Resources, Inc.
- Chloeta Fire, L.L.C.
- Choicecomm LLC
- ChristianSteven Software LLC
- Chroma Consulting, LLC
- Churchill Communications and Marketing LLC
- Ciracom Incorporated
- CITE Armored, Inc
- Citro’s Carpet Cops
- Citrus Man Premium Cleaning Solutions LLC
- Civil Support Services, LLC
- Ciyis LLC
- CLAF Logistics, LLC
- Clark Dynamic Test Laboratory, Inc.
- Clean Getaway Products LLC
- Clean Green Recycling, LLC
- Clean Rooms West, Inc.
- Clean Team Janitorial Service, Inc.
- Clear Communication Solutions, LLC
- Clear2Fly Aerospace, LLC
- ClearFlite Inc
- Clearskope Consulting & Services, LLC
- Click IT of Marietta, LLC
- CLJ Consulting and Contracting LLC
- CLO Enterprises, LLC
- Cloud11 LLC
- CMAAG LLC [DBA Hoopla]
- CMatt Consulting LLC
- CMH Business Corporation
- CNC Consulting, Inc.
- Co-Creation Partners Inc.
- Coast And Harbor Associates, Inc
- Coast Automation, Inc.
- Coastal Communications Consultants Inc.
- Coastal Machine & Supply Inc.
- Coastal Virginia Coin-Op, LLC
- Cocklins Film & Video, Inc.
- Coeus Solutions, LLC
- Coffey and Biz LLC
- Cogar Group, Ltd
- Cognitive Agility, LLC
- Coho Climate Advisors LLC
- Cole Technology Solutions Group, LLC
- Coleman Consulting Group, LLC
- Colin K. Dunn And Associates LLC
- Collapsible Cooler Co., LLC
- Colorado Sanitation Services Corp [DBA Enviro-Master of Denver South]
- COLT2 LLC
- Columbus Technologies and Services, Inc.
- COM Systems Inc.
- Combat Medical Systems, LLC
- Command Commissioning, LLC
- Command Services & Support, Inc.
- Commander’s Concepts Commissioning LLC
- Commercial Door & Hardware, Inc.
- Commercial Enterprises, Inc [DBA Total Presence Mgt]
- Commercial Facilities Management, Inc.
- Commercial Real Estate Consultants, LLC
- Communication Institute International, Inc.
- Comp Sec Direct, LLC
- Complete Contract Consulting, LLC
- Complete Marketing Resources Inc
- Complete Medical Solutions, LLC
- Computer Integration and Programming Solutions Corp
- Computer Marketing Associates Inc
- Computer Sites Inc.
- Computer Training Source Inc
- COMSEC LLC
- COMSO, INC.
- Con Healy d/b/a Symmetrical Data Security, LLC
- Concentric Security LLC
- Concepts Inc
- Concord Consulting Group of Illinois, Inc., The
- Concrete Rose Scrubs LLC
- CONEXIG, LLC
- ConexSmart LLC
- Connecticut Trailers Inc.
- Conserve-A-Watt Lighting, Inc.
- Consilium Strategic Solutions, LLC
- Consolidated Land Services, Inc.
- constructNET International, Inc.
- Constructsecure, Inc.
- Continental Drive Away, Inc.
- Contract Furnishings Inc
- Contracting Solutions, Inc.
- ContractUAV, LLC
- Control Specialties, Inc.
- Cooperate Marketing LLC
- Copa GSE LLC
- Copia Consulting Group, LLC
- Copious Brand LLC
- COPP Industrial Manufacturing, Inc.
- Coray Gurnitz Consulting Inc
- CORE Survival Inc.
- Core2Core Geologic
- Coreblox LLC
- CoreMedica Laboratories Inc
- Cork Tree Creative, Inc.
- Cormac Corporation
- Corneli Systems LLC
- Corner Alliance Inc.
- Cornerstone Construction of Russellville, Inc.
- Cornerstone Global, LLC
- Cornerstone Hardwood Designs, LLC
- Corporate Crime Control Protective Services, Inc.
- Corporate Valuation Advisors, Inc.
- Corvitex Corporation
- Cosmic Aprons LLC
- CoSolutions, Inc.
- Covalent Solutions, LLC
- Covenant Electric, Inc.
- Coventry Industries LLC
- CoverCar, LLC
- Cox Machine LLC
- Cox Subscriptions, Inc.
- Coyote Contracting LLC
- CPS TECH, INC.
- Craft Designs, Inc.
- Craft Mechanical LLC
- Crafted Leadership, LLC
- Craib Accounting LLC
- The Crane Guys, LLC
- Creative Cabling and Bertram Electric Corp.
- Creative Concepts International Inc.
- Creative Services, Inc.
- Creative Systems and Consulting L.L.C.
- Creative Tool & Machining Inc.
- Creative Visions, LLC
- Credo IT Incorporated
- Creole Translations LLC
- Crestridge Group LLC
- Crews Control Corp
- CRI Advantage, Inc.
- CrisisCommunication.net, LLC
- CRISP LLC
- Critical Path Engineering Solutions, PLLC
- Critical Power Consultants, Inc.
- Cropper Industries, LLC
- Cross Management Services, Inc.
- Crosscheck Technologies LLC
- Crossroads Talent Solutions, LLC
- Croton Energy Group, Inc.
- Crow Electric LLC
- Crow Engineering, Inc.
- Crowbar Security Solutions LLC
- Cruise Ventures, Inc.
- CRWI, LLC
- Crystal Enterprises, Inc.
- CSC, LLC
- CSI Aviation, Inc.
- CSIOS Corporation
- CSMI, LLC
- CSR Inc
- CTA Consultants LLC
- CTI Energy Services LLC
- CTS Beacon LLC
- Cube Care, Co.
- Cubicle Curtain Factory, Inc.
- Culpepper & Associates Security Services Inc.
- Curl Translations LLC
- Curtis Manufacturing, Inc.
- Custom Software Systems, Inc.
- CustomBuilt Homes, Inc.
- CW Worldwide Meetings, Inc. [DBA: Site Solutions Worldwide]
- Cyber Sentinel Consulting, Inc.
- CyberDefenses, Inc.
- Cyberlocke, LLC
- Cybersecurity Professionals LLC
- Cyintech, Inc.
- Czero, Inc.