- Q Comp Technologies, Inc. (Greenville, WI)
- Q Interactive (Chicago, IL)
- Q Labtech LLC (Waterford, CT)
- Q-Lab Corporation (Westlake, OH)
- Q-layer Corp. (Mountain View, CA)
- Q-PLUS Labs (Irvine, CA)
- Q-See (Anaheim, CA)
- Q-Sensei Corp (Erfurt, DEU)
- Q-Tech Corp. (Culver City, CA)
- Q-Tran Inc. (Bridgeport, CT)
- Q-Tronics Co. (Saddle Brook, NJ)
- Q3 Technologies (Walpole, MA)
- QA Supplies LLC (Norfolk, VA)
- QA1 Precision Products, Inc. (Lakeville, MN)
- Qad (Carpinteria, CA)
- QAI Laboratories, Inc. (Tulsa, OK)
- QAim Ltd (Espoo, FIN)
- QAS (Charlestown, MA)
- QASS Net, Inc. (Arlington Heights, IL)
- QB Manufacturing (Washington, MO)
- Qbotix (Menlo Park, CA)
- QC Industries Conveyors (Batavia, OH)
- QC Manufacturing, Inc. (Temecula, CA)
- Qcept Technologies Inc. (Atlanta, GA)
- QCG, Inc. (Richardson, TX)
- QCMI Corp. (Middleburg, PA)
- QCommunications, LLC (Lees Summit, MO)
- QComp Technologies, Inc. (Greenville, WI)
- QCSS (Quality Customer Service & Sales) (Deer Park, IL)
- Qdrivium Corp. (New York, NY)
- QED Automation LLC (Fresno, CA)
- QED Connect, Inc (Manchester, NH)
- QED Environmental Systems, Inc. (Dexter, MI)
- QED/Inc. (Santa Ana, CA)
- QEP Co., Inc. (Boca Raton, FL)
- Qfix (Avondale, PA)
- Qfix (Avondale, PA)
- Qforma, Inc. (Santa Fe, NM)
- QIAGEN (Germantown, MD)
- Qiagen N.V. (Venlo, NLD)
- QIAGEN NV (KJ Venlo, NLD)
- Qiao Xing Mobile Communication Co., Ltd. (Beijing, CHN)
- Qiao Xing Universal Telephone, Inc. (Guangdong, CHN)
- QID Solutions Ltd (Zalaszentgrót, HUN)
- Qimarox (Aurora, IL)
- Qimonda (Austin, TX)
- QinetiQ North America (Madison, VA)
- QL2 Software (Seattle, WA)
- QLight (San Jose, CA)
- QlikTech (Radnor, PA)
- QLogic Corp. (Aliso Viejo, CA)
- QM Environmental (Aldersyde, AB, CAN)
- QM Power, Inc. (Kansas City, MO)
- QMC Technologies, Inc. (Depew, NY)
- QMH - Quality Material Handling, Inc. (Rancho Cucamonga, CA)
- QMI Security Solutions (Itasca, IL)
- QNAP (Pomona, CA)
- QNAP Systems, Inc. (Taiwan, CHN)
- QNAP Systems, Inc. (Pomona, CA)
- Qnective (Zurich, CHE)
- QNX Software Systems Ltd (Kanata, ON, CAN)
- QoE Systems (Los Altos, CA)
- Qognify Ltd. (Pearl River, NY)
- Qorvo (Greensboro, NC)
- Qosina Corp. (Ronkonkoma, NY)
- Qosmedix (Ronkonkoma, NY)
- Qosmedix (Edgewood, NY)
- QP Semiconductor (Santa Clara, CA)
- QP Technologies (San Diego, CA)
- QPM Products Corp. (Vernon, BC, CAN)
- QPR Software PLC (Helsinki, FIN)
- Qqest Software Systems, Inc (Sandy, UT)
- QRP, Inc. (Leland, NC)
- Qsan Technology, Inc (Taipei, TWN)
- QSR Automations (Louisville, KY)
- QSR International (Americas), Inc. (Cambridge, MA)
- QSSolutions Engineered Systems Group, L.L.C. (Royal Oak, MI)
- QSTARZ (Taipei 114, TWN)
- QStrat, Inc. (Mississauga, CAN)
- QT Ultrasound (Novato, CA)
- QTC Metric Gears (Hicksville, NY)
- QTech Inc. (Hyderabad, IND)
- QTEK Manufacturing Ltd. (Galway, IRL)
- QTRCO, Inc. (Tomball, TX)
- QTS Realty Trust, Inc. (Overland Park, KS)
- QTS, Inc (Medway, MA)
- QTS, Inc (Medway, MA)
- QUA (Charleroi, PA)
- QUA Group (Canonsburg, PA)
- Quabbin Wire & Cable Co. (Ware, MA)
- Quad Energy (Pinehurst, TX)
- Quad Graphics, Inc. (Sussex, WI)
- Quad Graphics, Inc. (Effingham, IL)
- Quad Micro Works (Los Angeles, CA)
- Quadex, Inc. (North Little Rock, AR)
- Quadient (Milford, CT)
- Quadient (Boston, MA)
- QuadraMed (Reston, VA)
- Quadrant 4 Solutions, Inc. (Schaumburg, IL)
- Quadrant Software (Mansfield, MA)
- Quadrant Valves & Actuators (Broussard, LA)
- Quadrascan Technologies, LLC (Brentwood, TN)
- Quadrel Labeling Systems (Mentor, OH)
- Quadrem (Plano, TX)
- Quadrispace (Allen, TX)
- Quadro Engineering Corp. (Waterloo, ON, CAN)
- Quadrom Services, S.L. (Barcelona, ESP)
- Quadron Data Solutions (Denver, CO)
- Quadros Systems, Inc (Houston, TX)
- Quadrox US (Henderson, NV)
- QuadTech (Marlborough, MA)
- Quail Electronics (Livermore, CA)
- Quake Global, Inc. (San Diego, CA)
- Quaker Chemical (Conshohocken, PA)
- Quaker Chemical Corporation (Conshohocken, PA)
- Quaker Chemical Corporation (Bingham Farms, MI)
- Quaker Houghton (Conshohocken, PA)
- Qual Tech Labs, Inc. (Exton, PA)
- Qualcomm (San Diego, CA)
- Qualcomm Technologies, Inc. (San Jose, CA)
- Qualcomm Technologies, Inc. (San Diego, CA)
- QualiChem Incorporated (Salem, VA)
- Qualiform, Inc. (Wadsworth, OH)
- Qualigen, Inc (Carlsbad, CA)
- QualiPlex Software LLc (Georgia, GA)
- Qualis Technology, LLC (Westborough, MA)
- QualiSystems (Santa Clara, CA)
- Qualite Sports Lighting (Hillsdale, MI)
- Qualitek International, Inc. (Addison, IL)
- Qualitel Corporation (Everett, WA)
- QualiTest USA (Fort Lauderdale, FL)
- Qualitrol Company (Fairport, NY)
- QualiTru Sampling Systems. (Oakdale, MN)
- Quality Air Management (Cary, NC)
- Quality Aircraft Accessories (Tulsa, OK)
- Quality Bearings & Components - QBC (New Hyde Park, NY)
- Quality Business Systems, Inc (Bellevue, WA)
- Quality Centerless Grinding Corp. (Middlefield, CT)
- Quality Control Products, LLC (Marrero, LA)
- Quality Control Solutions Inc (Temecula, CA)
- Quality Distribution (Tampa, FL)
- Quality Equipment & Spray (Phoenix, AZ)
- Quality Industries, Inc. (La Vergne, TN)
- Quality Ingredients Corp. (Burnsville, MN)
- Quality Lighting (San Marcos, TX)
- Quality Plastics LLC (Fredericksburg, OH)
- Quality Plus Mfg, Inc. (Oelwein, IA)
- Quality Scales Unlimited (Byron, CA)
- Quality Software Systems (Piscataway, NJ)
- Quality Solutions (Corydon, IN)
- Quality Stainless Products (Hazelwood, MO)
- Quality Standby Services (Marietta, GA)
- Quality Strapping, Inc. (Brooklyn, NY)
- Quality Support, LLC (Scottdale, PA)
- Quality Systems International Corporation (Ramsey, NJ)
- Quality Technologies (Canton, GA)
- Quality Technology Services (Santa Clara, CA)
- Quality Thermistor, Inc. (Boise, ID)
- Quality Tool (Saint Paul, MN)
- Quality Tools, Inc. (Blairstown, NJ)
- Quality Valve & Components (Flanders, NJ)
- Quality Vision International, Inc. (QVI) (Rochester, NY)
- Quality Wood Floors (Phoenix, AZ)
- QualityIP (Kent, OH)
- QualityMetric Incorporated (Lincoln, RI)
- Quallion, LLC (Sylmar, CA)
- Qualmark (Santa Clara, CA)
- QualSoft Services (Pune, IND)
- Qualstar (Camarillo, CA)
- Qualtek Electronics Corporation (Mentor, OH)
- Qualtre, Inc. (Marlborough, MA)
- Qualys, Inc. (Redwood City, CA)
- Quandel Consultants (Chicago, IL)
- Quant 3D (Garden Grove, CA)
- Quant 3D (Garden Grove, CA)
- Quanta QCT (San Jose, CA)
- Quanta Services (Houston, TX)
- Quanta X Technology (Seminole, FL)
- Quantachrome (Boynton Beach, FL)
- Quantance (San Mateo, CA)
- Quantcast Corp. (San Francisco, CA)
- Quantek Instruments (Grafton, MA)
- Quantel Medical (Bozeman, MT)
- Quantela, Inc. (Milpitas, CA)
- Quanticus S.A. de C.V (Queretaro, Qro, MEX)
- Quantify Energy (New York, NY)
- Quantitech Ltd. (Milton Keynes, GBR)
- Quantitech, Inc. (Huntsville, AL)
- Quantivate (Woodinville, WA)
- Quantix (The Woodlands, TX)
- Quantros, Inc. (Milpitas, CA)
- Quantum Automation (Anaheim, CA)
- Quantum Composers, Inc (Bozeman, MT)
- Quantum Composites, Inc. (Bay City, MI)
- Quantum Controls, Inc. (QCI) (Chanhassen, MN)
- Quantum Corp. (Milpitas, CA)
- Quantum Corp. (San Jose, CA)
- Quantum Data, Inc. (Elgin, IL)
- Quantum Design (Loves Park, IL)
- Quantum Design Inc (San Diego, CA)
- Quantum Devices, Inc. (Barneveld, WI)
- Quantum Electro Optical Development Corp. (Santa Clara, CA)
- Quantum Electro Opto Systems Sdn. Bhd. (QEOS) (Cupertino, CA)
- Quantum Engineering Solutions LLC (Lynnwood, WA)
- Quantum Fuel Systems Technologies Inc (Lake Forest, CA)
- Quantum Labs (Fridley, MN)
- Quantum Logic Corporation (Westport, CT)
- Quantum Materials Corp. (San Marcos, TX)
- Quantum Materials Inc. (San Diego, CA)
- Quantum Pharmaceuticals (Moscow, RUS)
- Quantum Precision Group LLC (Goffstown, NH)
- Quantum Retail Technology, Inc (Minneapolis, MN)
- Quantum Scientific Imaging, Inc. (Poplarville, MS)
- Quantum Secure, Inc. (San Jose, CA)
- Quantum Storage Systems (Miami, FL)
- Quantum3D Inc. (San Jose, CA)
- QuantumClean (Quakertown, PA)
- Quarch Technology Ltd (Scotland, ARE)
- Quarter Century Design (Kettering, OH)
- Quarterhouse Software (Bastrop, TX)
- Quartex (Lake Geneva, WI)
- Quartzdyne Inc. (Salt Lake City, UT)
- Quasar International, Inc. (Albuquerque, NM)
- Quatech, Inc (Hudson, OH)
- Quatro Composites (Poway, CA)
- Quattro Wireless (Waltham, MA)
- Qube Corporation (Chagrin Falls, OH)
- Qubiqa USA, Inc (Trevose, PA)
- Quebecor World, Inc. (Kingsport, TN)
- Quebecor World, Inc. (Cookeville, TN)
- Quebecor World, Inc. (Memphis, TN)
- Queen City Forging Co. (Cincinnati, OH)
- Queen City Software, Inc (Cincinnati, OH)
- Queen City Software, Inc. (Cincinnati, OH)
- Quellan, Inc. (Santa Clara, CA)
- Quench Water (King Of Prussia, PA)
- Queplix (Princeton, NJ)
- QuesCom (Sophia Antipolis, FRA)
- Quest Analytics (Overland Park, KS)
- Quest CAD/CAM (Laguna Hills, CA)
- Quest Controls, Inc. (Palmetto, FL)
- Quest Diagnostics (Collegeville, PA)
- QuEST Global Services (East Hartford, CT)
- Quest Industries, LLC (Hillside, NJ)
- Quest Innovations B.V. (Wieringerwerf, NLD)
- Quest International, Inc. (Memphis, TN)
- Quest Software (Reston, VA)
- Quest Software, Inc. (Aliso Viejo, CA)
- Quest Solutions (Sarasota, FL)
- Questar Products International, Inc (Pleasanton, CA)
- QuestaWeb, Inc. (Westfield, NJ)
- Questek (Elgin, IL)
- QuesTek Innovations LLC (Evanston, IL)
- Questex LLC. (New York, NY)
- Questra Corp (Redwood City, CA)
- Questys Solutions (Mission Viejo, CA)
- Queue Research Ltd (Dunedin, NZL)
- Quick Cable Corp. (Franksville, WI)
- Quick Connectors, Inc. (Houston, TX)
- Quick Draw & Machining Inc. (Ventura, CA)
- Quick Eagle Networks, Inc. (Mountain View, CA)
- Quick Fuel Technology (Bowling Green, KY)
- Quick Label Systems (West Warwick, RI)
- Quick Mount PV (Walnut Creek, CA)
- Quick Tensioning Systems (RdMedway, MA)
- Quick-Crate a Div. of GF League Co., Inc. (Greenville, SC)
- QuickArrow, Inc. (Austin, TX)
- Quickbite Safety Couplers (Lexington, NC)
- Quickcomm Software Solutions, Inc. (New York, NY)
- Quickfilter Technologies, Inc. (Allen, TX)
- Quicklogic Corporation (Sunnyvale, CA)
- QuickMedical (Warwick, RI)
- Quickmill, Inc. (Peterborough, ON, CAN)
- QuickPAD Technology Corp. (Los Altos, CA)
- Quickscrews International Corp. (Livermore, CA)
- Quicksilver Controls, Inc (San Dimas, CA)
- QuickTree, Inc. (San Jose, CA)
- Quiconnect Ltd (London, GBR)
- Quiet Solution (Sunnyvale, CA)
- Quigley Motor Co., Inc. (Manchester, PA)
- QuikCycle, Inc. (Santa Clara, CA)
- Quikserv Inc. (Houston, TX)
- Quikspray, Inc. (Port Clinton, OH)
- Quintech Electronics & Communications, Inc. (Indiana, PA)
- Quintech Electronics and Communications Inc. (Indiana, PA)
- QuintessenceLabs Pty Ltd (Acton, AUS)
- Quintiles Transnational Corp. (Durham, NC)
- Quintiq (5201 AG 's-Hertogenbosch, NLD)
- QuintIQ (Wayne, PA)
- Quintron Systems, Inc. (Santa Maria, CA)
- Quintum Technologies, LLC. (Eatontown, NJ)
- Quintura, Inc. (Alexandria, VA)
- Quintus Technologies (Lewis Center, OH)
- Quiptech International Ltd (Galway, ISR)
- Quixotic Systems, Inc. (New York, NY)
- Qumranet (Sunnyvale, CA)
- Quod Financial (London, GBR)
- Quorum Information Systems (Pittsburgh, PA)
- Quorum Information Technologies, Inc. (Calgary, CAN)
- Quorum Software (Dallas, TX)
- Quorum Software, Inc. (Fairfax, VT)
- Quorum Systems, Inc. (San Diego, CA)
- Quosal, Inc. (Bothell, WA)
- QuoteMedia, Inc. (Fountain Hills, AZ)
- Quotient Sciences (Garnet Valley, PA)
- Quova, Inc (Mountain View, CA)
- Quovadx, Inc. (Atlanta, GA)
- Qurb, Inc (San Mateo, CA)
- QUSA Thermal, Inc. (Boca Raton, FL)
- Qv21 Technologies, Inc (Austin, TX)
- Qvinci Software (Austin, TX)
- QWASI, Inc. (Malvern, PA)
- Qwest Communications International Inc. (Denver, CO)
- Qwilt, Inc. (Redwood City, CA)
- QxSoft, LLC (Lewis Center, OH)
- QYNAPSE Inc. (Boston, MA)