| CLCharpatco, LLC | Vancouver | WA | — | ◇ UNVERIFIED |
| CEChemring Energetic Devices | Downers Grove | IL | — | ◇ UNVERIFIED |
| CTChip-bridge Technologies, LLC | Fort Collins | CO | — | ◇ UNVERIFIED |
| CMChipmasters Mfg | Azusa | CA | — | ◇ UNVERIFIED |
| CACircle Aw Products CO | Modesto | CA | — | ◇ UNVERIFIED |
 Cirrus Design Corporation Dba Cirrus Aircraft | Duluth | MN | — | ◇ UNVERIFIED |
| CCCity & County of San Francisco | San Francisco | CA | — | ◇ UNVERIFIED |
| COCity of Chicago-streets and Sanitation, Auto Pound | Chicago | IL | — | ◇ UNVERIFIED |
| CSCity Sign Services, Incorporated | Dallas | TX | — | ◇ UNVERIFIED |
| CICl Imet Instruments Company | Redlands | CA | — | ◇ UNVERIFIED |
| CIClintco Industries INC Dba Custom Aircraft Parts | El Cajon | CA | — | ◇ UNVERIFIED |
| CMC & M Machining LLC | Webb City | MO | — | ◇ UNVERIFIED |
| CACnc Aztec | San Diego | CA | — | ◇ UNVERIFIED |
| CICoastal Ignition & Controls | Ventura | CA | — | ◇ UNVERIFIED |
| CCobham | Davenport | IA | — | ◇ UNVERIFIED |
| CECody Energy Services, INC | Bluefield | WV | — | ◇ UNVERIFIED |
| CECollins Electrical Company, INC | West Sacramento | CA | — | ◇ UNVERIFIED |
| CACommercial Aircraft | Wichita | KS | — | ◇ UNVERIFIED |
| CCCommunity Church/elementary School | Pine Grove | CA | — | ◇ UNVERIFIED |
| CCompositec | Mission Viejo | CA | — | ◇ UNVERIFIED |
| CEComposite Engineering INC | Mcclellan | CA | — | ◇ UNVERIFIED |
| CDComputer Dynamics INC | Greenville | SC | — | ◇ UNVERIFIED |
| CPComputer Products Tecnetics | Boulder | CO | — | ◇ UNVERIFIED |
| CIConbstruction Innovations LLC | Sacramento | CA | — | ◇ UNVERIFIED |
| CEConsolidated Electrical Distributors, INC. | Elk Grove Village | IL | — | ◇ UNVERIFIED |
| CIConstruction Innovations | Sacramento | CA | — | ◇ UNVERIFIED |
| CGConte's Generator Service | Seaside | CA | — | ◇ UNVERIFIED |
| C1Continental 1776 LLC | Eau Claire | WI | — | ◇ UNVERIFIED |
| CContinuum | Milpitas | CA | — | ◇ UNVERIFIED |
| CSControl Screening LLC | Fairfield | NJ | — | ◇ UNVERIFIED |
| CBCooper Bussman | Pleasanton | CA | — | ◇ UNVERIFIED |
| CBCooper Bussmann | Black Mountain | NC | — | ◇ UNVERIFIED |
| CICooper Industries | Elizabethtown | KY | — | ◇ UNVERIFIED |
| CACornwell Aerospace Services, LLC | Saint Peters | MO | — | ◇ UNVERIFIED |
| CCCoronado Communications Corporation | Tucson | AZ | — | ◇ UNVERIFIED |
| CACox Airparts, LLC | Wichita | KS | — | ◇ UNVERIFIED |
| CICpdooley's Investments & Holdings LLC | Westminster | MD | — | ◇ UNVERIFIED |
| CECritical Energy | Hawthorne | CA | — | ◇ UNVERIFIED |
| CCCrouse-hinds CO | Florence | KY | — | ◇ UNVERIFIED |
| CVCryopak Verification Technologies, INC. | Buchanan | VA | — | ◇ UNVERIFIED |
| CICTT Inc. | San Jose | CA | — | ◇ UNVERIFIED |
| CLCurntly LLC | North Bergen | NJ | — | ◇ UNVERIFIED |
| CICurtis Instruments Pr INC | Carolina | PR | — | ◇ UNVERIFIED |
| CCCurtiss-wright Controls Integrated | City of Industry | CA | — | ◇ UNVERIFIED |
| CACustom Aircraft Cabinets, INC. | North Little Rock | AR | — | ◇ UNVERIFIED |
| CBCustom Built Pneumatics INC | Blue Earth | MN | — | ◇ UNVERIFIED |
| CCCustom Contract Manufacturing LLC | Hillsboro | OR | — | ◇ UNVERIFIED |
 Custom Control Sensors INC | Chatsworth | CA | — | ◇ UNVERIFIED |
| CCCustom Controls of Arizona, Inc. | Phoenix | AZ | — | ◇ UNVERIFIED |
 Custom Machine Works, Inc. | Fayetteville | AR | — | ◇ UNVERIFIED |
| CHCutler Hammer Electrical CO | Las Piedras | PR | — | ◇ UNVERIFIED |
| CHCutler Hammer Electrical Company | Coamo | PR | — | ◇ UNVERIFIED |
| CSCx Systems, INC. | Lincolnton | NC | — | ◇ UNVERIFIED |
| CMCyto Meridian INC. | Lehigh Acres | FL | — | ◇ UNVERIFIED |
| DSDaa Seattle | Auburn | WA | — | ◇ UNVERIFIED |
| DADaher Aerospace | Stuart | FL | — | ◇ UNVERIFIED |
| DAD and L Enterprises, LLC | Reno | NV | — | ◇ UNVERIFIED |
| DFDassault Falcon Jet-teb | Little Ferry | NJ | — | ◇ UNVERIFIED |
| DTDatabee Technologies, LLC | Southwest Ranches | FL | — | ◇ UNVERIFIED |
| DLDavincia, LLC Dba Link Electronics | Jackson | MO | — | ◇ UNVERIFIED |
| DTDavis Technologies LLC | Chandler | AZ | — | ◇ UNVERIFIED |
| DTDaystar Technologies | Santa Clara | CA | — | ◇ UNVERIFIED |
| DBD Boudreau Electric | Lexington | MA | — | ◇ UNVERIFIED |
| DCDCI Corporation | North Salt Lake | UT | — | ◇ UNVERIFIED |
| DLDDP, Ltd | Machesney Park | IL | — | ◇ UNVERIFIED |
 Deep Ocean Engineering, INC. | San Jose | CA | — | ◇ UNVERIFIED |
| D9DelRose 9251, LLC | Frederick | CO | — | ◇ UNVERIFIED |
| DCDelta Controls Corporation | Shreveport | LA | — | ◇ UNVERIFIED |
| DIDelta-Ray Industries, Inc. | Litchfield | CT | — | ◇ UNVERIFIED |
| DCDeltatech Controls USA LLC | Shakopee | MN | — | ◇ UNVERIFIED |
| DODepartment of Defense | Corpus Christi | TX | — | ◇ UNVERIFIED |
| DHDG Holdings, Inc. | Anaheim | CA | — | ◇ UNVERIFIED |
 Digital Prototype Systems INC Dba Dps Telecom | Fresno | CA | — | ◇ UNVERIFIED |
| DLDiode Laser Concepts INC | Central Point | OR | — | ◇ UNVERIFIED |
| DPDI Properties LLC | Willmar | MN | — | ◇ UNVERIFIED |
| DADixie Aerospace | Atlanta | GA | — | ◇ UNVERIFIED |
 D-j Engineering, INC. | Augusta | KS | — | ◇ UNVERIFIED |
| D-j Engineering INC - Bldg 4a (stormwater) | Augusta | KS | — | ◇ UNVERIFIED |
| D-j Engineering INC - Bldgs 5c & 5e (stormwater) | Augusta | KS | — | ◇ UNVERIFIED |
| D-j Engineering INC - East-1011 (stormwater) | Augusta | KS | — | ◇ UNVERIFIED |
| D-j Engineering INC - East-810 (stormwater) | Augusta | KS | — | ◇ UNVERIFIED |
| DSDon Schumacher Racing | Brownsburg | IN | — | ◇ UNVERIFIED |
| DEDouglas Electronics INC | San Leandro | CA | — | ◇ UNVERIFIED |
 Douglass Innovations, Inc | Spicer | MN | — | ◇ UNVERIFIED |
| DMDowney Mfg INC | Downey | CA | — | ◇ UNVERIFIED |
| DIDresser Industries INC. Instrument Div. | Berea | KY | — | ◇ UNVERIFIED |
| DADretloh Aircraft Supply | Anaheim | CA | — | ◇ UNVERIFIED |
| DIDrs INC. | Anaheim | CA | — | ◇ UNVERIFIED |
| DADucommon Aerostructures, INC. | Gardena | CA | — | ◇ UNVERIFIED |
| DADucommun Aerostructures INC | Monrovia | CA | — | ◇ UNVERIFIED |
| DLDucommun La Barge Technologies | Carson | CA | — | ◇ UNVERIFIED |
| DDDupont Displays-600 Ward Drive | Santa Barbara | CA | — | ◇ UNVERIFIED |
| DPDWJR Properties, LLC | Spartanburg | SC | — | ◇ UNVERIFIED |
| DIDwyer Instruments INC | Grandview | MO | — | ◇ UNVERIFIED |
| DIDwyer Instruments INC. | Kingsbury | IN | — | ◇ UNVERIFIED |
| DIDwyer Instruments, LLC (dba Fluid Components International) (tech Center) | San Marcos | CA | — | ◇ UNVERIFIED |
| DIDwyer Instruments R-62 | Kingsbury | IN | — | ◇ UNVERIFIED |
| DSDynamic Systems and Research Corporation | Albuquerque | NM | — | ◇ UNVERIFIED |
 Dynamo Aviation, Inc. | North Hills | CA | — | ◇ UNVERIFIED |
| DRDynapac Rotating Company, INC. | Salt Lake City | UT | — | ◇ UNVERIFIED |
