| Lake Forest, IL | W W GRAINGER INC | 18,845 | 12 | 18,843 |
| Houston, TX | W&T OFFSHORE, INC. | 407 | 4 | 623 |
| Westminster, MA | W. E. AUBUCHON CO., INC. | 724 | 5 | 46 |
| Cass City, MI | WALBRO LLC | 399 | 3 | 399 |
| Deerfield, IL | WALGREEN CO. | 256,056 | 244 | 175,338 |
| Taylor, MI | WALLSIDE, INC. HEALTH INSURANCE PLAN | 142 | 2 | 142 |
| Bentonville, AR | WALMART INC. | 1,650,312 | 18 | 1,064,619 |
| New York, NY | WARBURG PINCUS LLC | 812 | 10 | 566 |
| Altoona, PA | WARD TRANSPORT & LOGISTICS CORPORATION | 1,388 | 5 | 1,475 |
| New York, NY | WARNER BROS. DISCOVERY, INC. | 16,387 | 18 | 16,513 |
| Brookwood, AL | WARRIOR MET COAL, INC. | 1,294 | 3 | 1,294 |
| Lexington, VA | WASHINGTON AND LEE UNIVERSITY | 814 | 2 | 814 |
| North Grafton, MA | WASHINGTON MILLS NORTH GRAFTON, INC. | 464 | 3 | 464 |
| Longwood, FL | WASTE PRO USA, INC. | 5,298 | 5 | 4,761 |
| Charlotte, NC | WASTEQUIP, LLC | 1,563 | 4 | 1,890 |
| Milford, MA | WATERS TECHNOLOGIES CORPORATION | 2,927 | 6 | 2,871 |
| Corsicana, TX | WATKINS CONSTRUCTION COMPANY, LLC | 371 | 4 | 373 |
| Cambridge, MA | WAVE LIFE SCIENCES USA, INC. | 285 | 4 | 285 |
| Sandy, UT | WCF MUTUAL INSURANCE COMPANY | 552 | 3 | 552 |
| Pembroke Pines, FL | WE FLORIDA FINANCIAL | 122 | 5 | 122 |
| The Woodlands, TX | WEBBER, LLC | 3,682 | 2 | 3,745 |
| Jericho, NY | WEBSTER BANK, N.A. | 4,257 | 9 | 4,457 |
| Swedesboro, NJ | WEDGEWOOD VILLAGE PHARMACY, LLC | 1,007 | 6 | 1,007 |
| San Francisco, CA | WEIGHTS & BIASES INC. | 185 | 7 | 224 |
| Le Mars, IA | WELLS ENTERPRISES, INC. | 3,883 | 4 | 5,971 |
| Atlanta, GA | WELLSTREET OF GEORGIA, PC | 331 | 2 | 405 |
| Wenatchee, WA | WENATCHEE VALLEY MEDICAL CENTER | 297 | 1 | 548 |
| Wheeling, WV | WESBANCO INC | 2,156 | 10 | 2,431 |
| Fort Worth, TX | WESCO AIRCRAFT HARDWARE CORPORATION | 1,237 | 5 | 1,237 |
| Wilkinsburg, PA | WESLEY FAMILY SERVICES | 791 | 5 | 791 |
| Irvine, CA | WEST COAST UNIVERSITY, INC. | 2,877 | 8 | 2,877 |
| Pittsburgh, PA | WEST PENN ALLEGHENY HEALTH SYSTEM | 16,682 | 3 | 15,200 |
| Brawley, CA | WESTERN MESQUITE MINES, INC. | 345 | 5 | 345 |
| The Woodlands, TX | WESTERN MIDSTREAM SERVICES, LLC | 1,504 | 12 | 1,498 |
| Cranberry Township, PA | WESTINGHOUSE ELECTRIC COMPANY LLC | 11,098 | 10 | 14,336 |
| El Paso, TX | WESTSTAR BANK | 313 | 2 | 327 |
| Portland, ME | WEX INC. | 4,895 | 5 | 4,985 |
| Seattle, WA | WEYERHAEUSER COMPANY | 8,908 | 6 | 13 |
| San Antonio, TX | WHATABURGER RESTAURANTS LLC | 52,740 | 9 | 35 |
| Portsmouth, NH | WHEELABRATOR TECHNOLOGIES, INC. | 2,164 | 2 | 3,225 |
| New York, NY | WHITE & CASE LLP | 1,396 | 12 | 1,396 |
| Philadelphia, PA | WHITE AND WILLIAMS LLP | 346 | 8 | 352 |
| Columbus, OH | WHITE CASTLE SYSTEM, INC. | 3,527 | 10 | 4,454 |
| Spokane, WA | WHITWORTH UNIVERSITY | 411 | 4 | 581 |
| St. Louis, MO | WIESE USA, INC. | 1,228 | 6 | 1,592 |
| Eugene, OR | WILLAMETTE VALLEY COMPANY LLC | 425 | 7 | 437 |
| Sarasota, FL | WILLIAMS, PARKER, HARRISON, DIETZ & GETZEN, PLLC | 93 | 4 | 96 |
| Boston, MA | WILMER CUTLER PICKERING HALE AND DORR LLP | 1,886 | 11 | 1,848 |
| Oxford, MA | WILSON LANGUAGE TRAINING CORPORATION | 295 | 3 | 295 |
| Bloomington, MN | WILSON MCSHANE CORPORATION | 414 | 4 | 414 |
| Parkersburg, WV | WINCORE WINDOW CO., LLC | 388 | 2 | 655 |
| Marlborough, MA | WIND RIVER ENVIRONMENTAL | 1,097 | 4 | 1,092 |
| Little Rock, AR | WINROCK INSTITUTE FOR AGRICULTURAL DEVELOPMENT | 248 | 7 | 248 |
| Winslow, AZ | WINSLOW MEMORIAL HOSPITAL, INC. | 207 | 8 | 196 |
| Lexington, KY | WINTERWOOD, INC. | 434 | 4 | 434 |
| Houston, TX | WITT O'BRIEN'S PAYROLL MANAGEMENT LLC | 225 | 3 | 309 |
| Foley, AL | WOERNER AGRIBUSINESS, LLC | 95 | 2 | 103 |
| Portage, MI | WOLVERINE PIPE LINE COMPANY | 84 | 1 | 139 |
| Houston, TX | WOOD MACKENZIE, INC. | 545 | 2 | 570 |
| Tulsa, OK | WOODARD TECHNOLOGY & INVESTMENTS, LLC | 435 | 3 | 435 |
| Burbank, CA | WOODBURY UNIVERSITY | 0 | 5 | 199 |
| The Woodlands, TX | WOODFOREST FINANCIAL GROUP | 4,628 | 2 | 4,361 |
| San Francisco, CA | WOODRUFF-SAWYER AND COMPANY | 530 | 15 | 39 |
| Rochester, NY | WOODS OVIATT GILMAN, LLP | 221 | 4 | 221 |
| San Francisco, CA | WORKERS COMPENSATION INSURANCE RATING BUREAU OF CALIFORNIA | 164 | 6 | 164 |
| Raleigh, NC | WORKPLACE BENEFITS | 376 | 3 | 376 |
| Stamford, CT | WORLD WRESTLING ENTERTAINMENT, INC. | 699 | 8 | 722 |
| Jacksonville, FL | WOUNDED WARRIOR PROJECT, INC. | 909 | 7 | 909 |
| Monona, WI | WPS INSURANCE CORPORATION | 1,952 | 10 | 1,678 |
| West Des Moines, IA | WRIGHT SERVICE CORP. | 3,393 | 5 | 3,393 |
| New York, NY | WSP USA BUILDINGS INC. | 13,139 | 15 | 16,459 |
| Lubbock, TX | WYLIE & SON INC. | 202 | 5 | 242 |
| North Grafton, MA | WYMAN-GORDON COMPANY | 2,972 | 9 | 3,488 |
| Casper, WY | WYOMING ORTHOPAEDIC INSTITUTE | 112 | 2 | 99 |
| Troy, MI | X-RAY INDUSTRIES, INC. | 0 | 8 | 265 |
| Denver, CO | XACTLY CORPORATION | 224 | 6 | 224 |
| Norwalk, CT | XEROX CORPORATION | 8,732 | 31 | 8,227 |
| Stamford, CT | XL AMERICA, INC. | 2,130 | 10 | 88 |
| Belgrade, MT | XTANT MEDICAL HOLDINGS, INC. | 191 | 4 | 248 |
| Cincinnati, OH | XTEK INC | 395 | 3 | 395 |
| New York, NY | YAHOO HOLDINGS INC. | 3,387 | 8 | 4,038 |
| Cypress, CA | YAMAHA MOTOR CORPORATION, USA | 4,533 | 12 | 4,551 |
| Austell, GA | YANCEY BROS. CO | 2,243 | 7 | 7 |
| Atlanta, GA | YKK CORPORATION OF AMERICA | 844 | 10 | 1,394 |
| Boston, MA | YMCA OF GREATER BOSTON | 464 | 6 | 464 |
| Winston-salem, NC | YMCA OF NORTHWEST NORTH CAROLINA | 156 | 4 | 404 |
| San Francisco, CA | YMCA OF SAN FRANCISCO | 630 | 7 | 629 |
| Sugar Land, TX | YOKOGAWA CORPORATION OF AMERICA | 588 | 3 | 1,255 |
| York, ME | YORK HOSPITAL | 763 | 3 | 1,043 |
| Huntsville, AL | YORKTOWN SYSTEMS GROUP | 311 | 5 | 311 |
| Torrance, CA | YOSHINOYA AMERICA, INC. | 135 | 8 | 153 |
| Minneapolis, MN | YOUNG MENS CHRISTIAN ASSOCIATION OF THE NORTH | 861 | 2 | 861 |
| Yuma, AZ | YUMA REGIONAL MEDICAL CENTER | 2,187 | 9 | 2,323 |
| Laurel Hill, NC | Z.V. PATE, INC. | 58 | 2 | 58 |
| Summerville, SC | ZAPP PRECISION WIRE, INC. | 149 | 4 | 149 |
| Redmond, WA | ZETRON, INC. | 175 | 3 | 172 |
| Orangeburg, SC | ZEUS COMPANY, LLC | 1,945 | 3 | 1,946 |
| Portland, OR | ZIDELL MARINE CORPORATION | 136 | 3 | 136 |
| Norfolk, VA | ZIM AMERICAN INTEGRATED SHIPPING SERVICES, CO., LLC | 573 | 3 | 573 |
| Newport Beach, CA | ZINNIA HEALTH LLC | 731 | 6 | 791 |
| Parsippany, NJ | ZOETIS INC. | 8,873 | 7 | 8,873 |
| Vancouver, WA | ZOOMINFO TECHNOLOGIES LLC | 2,543 | 2 | 2,543 |
| Secaucus, NJ | ZT GROUP INTERNATIONAL, INC. DBA ZT SYSTEMS, INC. | 2,101 | 4 | 2,101 |
| Las Vegas, NV | ZUFFA, LLC | 494 | 6 | 480 |