| WINNER NURSING HOME, INC. | — | DB009601 | 1969-04-01 | Inactive | — |
| WINNER ORTHODOX PRESBYTERIAN CHURCH | — | CH000334 | 1965-10-15 | Active | WINNER |
| WINNER PHARMACY, INC. | — | DB055290 | 2010-04-22 | Active | GREGORY |
| WINNER PHYSICAL THERAPY, INC. | — | DB043492 | 2000-12-14 | Active | WINNER |
| Winner Pix Theater, Inc. | — | NS157072 | 2018-12-03 | Active | WINNER |
| WINNER PIZZA, INC. | — | FB008151 | 1982-01-14 | Revoked | OMAHA |
| WINNER PLUMBING AND HEATING, L.L.C. | — | DL007636 | 2004-07-19 | Active | WINNER |
| WINNER POST NO. 4674, VETERANS OF FOREIGN WARS OF THE UNITED STATES, INCORPORATED | — | NS001352 | 1950-11-04 | Active | WINNER |
| WINNER PUBLISHING, INC. | — | DB050832 | 2006-03-13 | Dissolved | CUSTER |
| Winner Real Estate, L.L.C. | — | DL256156 | 2023-08-06 | Active | Sioux Falls |
| WINNER REALTY, INC. | — | DB023654 | 1984-08-06 | Inactive | — |
| WINNER REGIONAL HEALTH AND WELLNESS FOUNDATION | — | NS009171 | 1990-05-18 | Active | WINNER |
| WINNER REGIONAL HEALTHCARE CENTER | — | NS000447 | 1961-12-06 | Active | WINNER |
| WINNER RESOURCE CENTER FOR FAMILIES | — | NS011060 | 1998-06-26 | Active | Winner |
| Winner Retirement Center, L.L.C. | — | DL316283 | 2025-12-22 | Active | Winner |
| WINNER RETIREMENT CENTER, L.L.C. | — | DL000222 | 1994-07-21 | Inactive | WINNER |
| WINNER SD CHAPTER, SPEBSQSA, INC. | — | NS012639 | 2004-08-27 | Dissolved | WINNER |
| WINNER SPEEDWAY CONCESSIONS, L.L.C. | — | DL004557 | 2002-03-18 | Active | RAPID CITY |
| WINNER SPEEDWAY, INC. | — | DB044810 | 2001-12-14 | Active | RAPID CITY |
| WINNER STOCKCAR ASSOCIATION, INC. | — | DB026274 | 1987-04-09 | Inactive | — |
| WINNER STOCKYARDS COMPANY | — | DB023870 | 1984-10-25 | Inactive | — |
| Winner Strategy Group, LLC | — | DL322955 | 2026-03-10 | Active | Sioux Falls |
| Winner Subs, LLC | — | DL317514 | 2026-01-08 | Active | Winner |
| Winner Surgery Clinic, P.C. | — | DB059482 | 2014-10-17 | Active | WINNER |
| Winner Transportation, Inc. | — | DB157404 | 2018-12-11 | Dissolved | Sioux Falls |
| Winner Trap Neuter Release & Rescue | — | NS271147 | 2024-03-20 | Active | Winner |
| WINNER USBC BOWLING ASSOCIATION | — | NS012826 | 2005-04-29 | Dissolved | WINNER |
| WINNER VARIETY, INC. | — | DB019396 | 1980-01-09 | Inactive | — |
| WINNER WELDING & MACHINE, INC. | — | DB030038 | 1990-12-10 | Active | WINNER |
| WINNER WHEAT PROCESSORS, INC. | — | DB021678 | 1982-07-21 | Inactive | — |
| WINNER WINDS, LLC | — | DL013282 | 2007-02-23 | Dissolved | Lennox |
| WINNER WOMEN'S USBC ASSOCIATION | — | NS011634 | 2000-11-09 | Dissolved | WINNER |
| WINNER YOUTH CABIN, INC. | — | NS013620 | 2008-01-18 | Active | WINNER |
| WINNER YOUTH CENTER, INC. | — | NS009684 | 1992-08-06 | Inactive | — |
| Winner Youth Rodeo, Inc. | — | NS208905 | 2021-08-23 | Active | Winner |
| Winner, LLC | — | DL306227 | 2025-08-04 | Active | Sioux Falls |
| WINNER, SOUTH DAKOTA | — | CI000181 | 1997-12-11 | Active | WINNER |
| WINNER, SOUTH DAKOTA LODGE NO. 2084 BENEVOLENT & PROTECTIVE ORDER OF ELKS OF THE UNITED STATES OF AMERICA | — | NS000091 | 1958-09-22 | Active | WINNER |
| WINNER-IDEAL COMMUNITY BETTERMENT CORPORATION | — | DB027168 | 1988-03-01 | Inactive | — |
| WINNER-IDEAL COMMUNITY DEVELOPMENT CORP., INC. | — | NS008701 | 1988-03-23 | Inactive | — |
| Winners Athletic Club LLC | — | DL327381 | 2026-04-29 | Active | Winner |
| WINNERS CIRCLE FEED S. D., INC. | — | DB027299 | 1988-04-20 | Inactive | — |
| WINNERS CIRCLE, LLC | — | DL010137 | 2005-11-08 | Dissolved | Mesquite |
| Winners Of Webster Parent-Teacher Organization, Inc. | — | NS247675 | 2023-03-30 | Active | Yankton |
| WINNERS OF WEBSTER PARENT-TEACHER ORGANIZATION, INC. | — | NS015117 | 2013-05-15 | Dissolved | YANKTON |
| WINNERS, INC. | — | DB040046 | 1998-05-13 | Dissolved | WATERTOWN |
| Winners, LLC | — | DL201240 | 2021-04-20 | Suspended | MOUNDS |
| WINNETOU PRODUCTIONS LLC | — | DL024526 | 2011-04-27 | Dissolved | PIERPONT |
| Winnewbiz L.L.C. | — | DL187310 | 2020-09-08 | Active | Sioux Falls |
| WinnGen distribution LLC | — | DL149440 | 2018-06-08 | Dissolved | Rapid City |
| Winnie's Chocolates and Desserts, LLC | — | DL165837 | 2019-06-11 | Dissolved | Spearfish |
| Winniefred LLC | — | DL219477 | 2022-01-29 | Active | Sioux Falls |
| WINNING BUSINESS PUBLISHING LIMITED LIABILITY COMPANY | — | DL014490 | 2007-08-17 | Inactive | — |
| WINNING EDGE ACADEMY, LLC | — | DL031520 | 2013-03-04 | Dissolved | RAPID CITY |
| Winning Edge LLC | — | DL265894 | 2024-01-05 | Active | Belle Fourche |
| WINNING PERFORMANCES, LLC | — | DL004740 | 2002-05-06 | Inactive | — |
| WINNING PHYSICAL MEDICINE AND REHAB STRATEGIES, P.C. | — | FB034565 | 2010-08-16 | Revoked | NORFOLK |
| WINNING WEALTH FORMULA LIMITED LIABILITY COMPANY | — | DL015395 | 2007-12-26 | Inactive | — |
| WINNIPEG BUDGET MOTEL LIMITED PARTNERSHIP | — | DP000282 | 1992-09-04 | Inactive | — |
| WINOLA FAMILY LIMITED PARTNERSHIP | — | DP002037 | 2009-09-09 | Inactive | PIERRE |
| WINONA AGENCY, INC. | — | FB027561 | 2003-08-05 | Revoked | WINONA |
| WINONA AGENCY, INC. | — | FB038757 | 2015-08-10 | Revoked | Winona |
| WINONA CLUB, INCORPORATED | — | NS005406 | 1973-09-17 | Inactive | — |
| WINONA HOSPITALITY CORPORATION | — | FB032957 | 2008-09-24 | Revoked | ST PAUL |
| WINONA INN LIMITED PARTNERSHIP | — | FP000718 | 2008-09-24 | Active | ST PAUL |
| WINONA MARKET RESEARCH BUREAU, INC. | — | FB017519 | 1994-12-19 | Inactive | MINNEAPOLIS |
| WINONA SUPER 8 MOTEL, INC. | — | DB014586 | 1977-08-10 | Inactive | — |
| WINONA, INC. | — | 19660259D | 1966-12-28 | Active | — |
| WINPORT INTERNATIONAL INCORPORATED | — | DB055594 | 2010-09-15 | Dissolved | Grove |
| WINPOWER, INC. | — | DB037507 | 1996-07-30 | Inactive | LE CENTER |
| WinProps, LLC | — | DL234504 | 2022-09-22 | Active | BROOKINGS |
| WINQUIST DAIRY FARMS, INC. | — | DF028203 | 1989-03-14 | Dissolved | AKRON |
| Winquist Farms, LLC | — | DL272031 | 2024-04-02 | Active | Alcester |
| WINQUIST INVESTMENTS, LLC | — | DL049802 | 2016-09-02 | Active | Canton |
| WINS Group Health, LLC | — | DL307275 | 2025-08-18 | Active | Sioux Falls |
| WINS Group Holdings, LLC | — | DL292939 | 2025-02-10 | Active | Sioux Falls |
| WINS Group, Inc. | — | DB160851 | 2019-02-25 | Active | SIOUX FALLS |
| WINSCAPE PARTNERS, LLC | — | DL033107 | 2013-07-15 | Inactive | CHATHAM |
| Winsell Construction, LLC | — | DL134127 | 2017-06-12 | Dissolved | Sturgis |
| Winship Farms SD, LLC | — | DL230914 | 2022-07-20 | Active | Pierre |
| WINSLOW BAPTIST CHURCH | — | 19680009N | 1968-10-09 | Active | — |
| WINSLOW CONGREGATIONAL CHURCH, INC. | — | 19640004N | 1964-05-07 | Active | — |
| WINSLOW PUBLIC LIBRARY | — | 19100010ND | 1910-07-19 | Suspended | — |
| WINSLOW-HOLBROOK-MERRITT POST, NO. 1, AMERICAN LEGION | — | 19220009ND | 1922-05-01 | Active | — |
| Winson Residential Services LLC | — | DL255861 | 2023-08-01 | Dissolved | Huron |
| Winsor Apartments, LLC | — | DL044757 | 2015-08-18 | Dissolved | MT VERNON |
| WINSOR GRAIN INC. | — | FB008510 | 1982-08-04 | Revoked | MINNEAPOLIS |
| Winsor Learning, Inc. | — | FB164680 | 2019-05-15 | Inactive | BLOOMINGTON |
| Winsor Learning, LLC | — | FL248580 | 2023-04-13 | Inactive | Scottsdale |
| Winspire, LLC | — | DL285233 | 2024-10-16 | Active | Elk Point |
| WINSTAR COMMUNICATIONS, LLC | — | FL001180 | 2002-02-13 | Revoked | WASHINGTON |
| WINSTAR GATEWAY NETWORK, INC. | — | FB015427 | 1992-07-30 | Inactive | DALLAS |
| WINSTAR MORTGAGE PARTNERS, INC. | — | FB027823 | 2003-10-20 | Inactive | PLYMOUTH |
| WINSTAR MORTGAGE PARTNERS, LLLP | — | FR000113 | 2002-11-27 | Inactive | PLYMOUTH |
| WINSTAR WIRELESS, INC. | — | FB021135 | 1998-03-24 | Revoked | VIENNA |
| WINSTED IMPORT/EXPORT LLC | — | DL004142 | 2001-10-15 | Inactive | — |
| Winston Housing Group, LLC | — | FL322305 | 2026-03-02 | Active | TROY |
| WINSTON INTERNATIONAL CORPORATION | — | DB023105 | 1984-01-26 | Inactive | — |
| WINSTON M. TOOMEY POST NO. 8530, VETERANS OF FOREIGN WARS OF THE UNITED STATES, INCORPORATED | — | NS001361 | 1948-12-21 | Active | GETTYSBURG |
| Winston Properties, LLC | — | DL045615 | 2015-10-26 | Active | ONIDA |
| WINSTON SHELL CORP. | — | FB018953 | 1996-05-17 | Revoked | RICHFIELD |
| WINSTON UNIVERSITY, INC. | — | DB043111 | 2000-08-08 | Dissolved | — |
| Winston Wolfe associates LLC | — | DL254967 | 2023-07-19 | Dissolved | Rapid City |
| WINSTON-DAKOTA HOMES, INC. | — | DB023060 | 1984-01-12 | Inactive | — |
| WINSUPPLY 0259 ACQ CO. | — | FB304383 | 2025-07-10 | Active | MORAINE |
| WINSUPPLY ALEXANDRIA MN CO. | — | FB016551 | 1993-12-09 | Active | Moraine |
| WINSUPPLY DENVER CO CO. | — | FB300649 | 2025-05-19 | Active | MORAINE |
| WINSUPPLY FARGO ND CO. | — | FB166640 | 2019-06-27 | Active | Moraine |
| WINSUPPLY INC. | — | FB021565 | 1998-07-15 | Active | Moraine |
| WINSUPPLY LAKEVILLE MN CO. | — | FB032557 | 2008-04-09 | Active | Moraine |
| Winsupply Lansing MI Co. | — | FB309956 | 2025-09-23 | Active | Moraine |
| WINSUPPLY N RAPID CITY SD CO. | — | FB018747 | 1996-03-13 | Active | Moraine |
| WINSUPPLY NORFOLK NE CO. | — | FB017021 | 1994-06-13 | Active | Moraine |
| WINSUPPLY OMAHA NE CO. | — | FB037163 | 2013-11-12 | Active | MORAINE |
| Winsupply Plymouth MN Co. | — | FB181877 | 2020-05-20 | Active | Moraine |
| WINSUPPLY RAPID CITY SD CO. | — | FB018776 | 1996-03-21 | Inactive | MORAINE |
| WINSUPPLY SCOTTSBLUFF NE CO. | — | FB026256 | 2002-05-17 | Active | Moraine |
| WINSUPPLY SIOUX FALLS SD CO. | — | FB026757 | 2002-11-13 | Active | Moraine |
| WINSUPPLY W SIOUX FALLS SD CO. | — | FB019596 | 1996-12-09 | Active | Moraine |
| WINSUPPLY WATERTOWN SD CO. | — | FB015634 | 1992-10-23 | Active | Moraine |
| WINTAK LLC | — | DL173665 | 2019-12-02 | Active | SIOUX FALLS |
| Winter & Leedom LLC | — | DL235482 | 2022-09-26 | Inactive | Sioux Falls |
| Winter Acres, LLC | — | DL223680 | 2022-03-29 | Active | Crooks |
| Winter Associates LLC | — | DL221616 | 2022-02-28 | Dissolved | Watertown |
| WINTER BROTHERS UNDERGROUND, INC. | — | DB038077 | 1997-01-02 | Dissolved | Volga |
| WINTER BROTHERS UNDERGROUND, LLC | — | FL000019 | 1994-03-25 | Inactive | PIPESTONE |
| Winter Concrete, LLC | — | DL209481 | 2021-09-01 | Dissolved | Rapid City |
| WINTER CONSTRUCTION COMPANY, INC. | — | FB011375 | 1987-03-16 | Revoked | PIPESTONE |
| Winter Construction LLC | — | DL235490 | 2022-09-27 | Active | Watertown |
| WINTER CONTRACTING LLC | — | DL162264 | 2019-03-26 | Active | BROOKINGS |
| Winter Count Mobile School- (Waniyetu Iyawapi: Counting the Winters) | — | NS049644 | 2015-04-20 | Dissolved | EAGLE BUTTE |
| Winter Creek, LLC | — | DL195612 | 2021-01-28 | Active | Sioux Falls |
| WINTER DAIRY LIMITED PARTNERSHIP | — | DP001668 | 2005-08-29 | Active | — |
| Winter Enterprises, LLC | — | DL050390 | 2016-10-21 | Active | CROOKS |
| WINTER EQUIPMENT COMPANY, INCORPORATED | — | FB036185 | 2012-08-13 | Active | WILLOUGHBY |
| WINTER FUN RENTALS, LLC | — | DL002639 | 1999-12-20 | Inactive | — |
| WINTER FUN, INC. | — | DB020092 | 1980-10-16 | Inactive | — |
| WINTER HARBOR CEMETERY ASSOCIATION | — | 19420002N | 1942-07-01 | Active | — |
| WINTER HARBOR FOOD SERVICE, INC. | — | 19660260D | 1966-01-18 | Dissolved | — |
| WINTER HARBOR MASONIC BUILDING ASSOCIATION | — | 19470057ND | 1947-02-28 | Active | — |
| WINTER HARBOR WATER COMPANY | — | 18910005D | 1891-02-26 | Dissolved | — |
| WINTER HARBOR YACHT CLUB | — | 18910001ND | 1891-06-01 | Active | — |
| Winter Haven LLC | — | DL300751 | 2025-05-20 | Active | Sioux Falls |
| WINTER LAW OFFICE, P.C. | — | DB057573 | 2013-02-15 | Dissolved | Rapid City |
| WINTER PARK APARTMENTS LIMITED PARTNERSHIP | — | DP000223 | 1991-09-05 | Active | — |
| Winter Park, LLC | — | DL131518 | 2017-03-14 | Active | SIOUX FALLS |
| Winter Promise LLC | — | DL332533 | 2026-07-01 | Active | Rapid City |
| Winter Rentals, LLC | — | DL166793 | 2019-07-01 | Dissolved | SIOUX FALLS |
| Winter Retreat, L.L.C. | — | DL223486 | 2022-03-25 | Active | Rapid City |
| Winter Speech Therapy Solutions LLC | — | DL200849 | 2021-04-14 | Inactive | Redfield |
| WINTER'S FAT CLASSIC, LLC | — | DL137824 | 2017-10-02 | Active | Spearfish |
| WINTER, INC. | — | DB030425 | 1991-03-18 | Dissolved | SIOUX FALLS |
| WINTER, WYMAN CONTRACT SERVICES, INC. | — | FB020911 | 1998-01-15 | Revoked | WALTHAM |
| Winter-Green Acres LLC | — | DL221301 | 2022-02-23 | Active | Crooks |
| Winter-Green Event Venues, Inc. | — | DB245136 | 2023-02-24 | Active | Crooks |
| Winterboer Farms, LLC | — | DL142642 | 2018-01-16 | Active | Brookings |
| WINTERCOUNT ENTERPRISES, INC. | — | DB023134 | 1984-02-07 | Inactive | — |
| Wintercreek Capital, LLC | — | DL239369 | 2022-11-29 | Dissolved | Rapid City |
| Winterfeld Consulting, LLC | — | DL165265 | 2019-05-29 | Active | Hudson |
| Winterfell LLC | — | DL130917 | 2017-02-22 | Dissolved | SANDY |
| Wintergreen Services LLC | — | DL298225 | 2025-04-17 | Active | Sioux Falls |
| WINTERPORT FREE LIBRARY ASSOCIATION | — | 19000006ND | 1900-11-16 | Active | — |
| WINTERPORT HISTORICAL ASSOCIATION | — | 19650055ND | 1965-09-16 | Active | — |
| WINTERS AND MERCHANT, INC. | — | FB009081 | 1983-08-08 | Revoked | SO. SIOUX CITY |
| WINTERS AND MERCHANT, INC. | — | FB023406 | 2000-01-10 | Revoked | SOUTH SIOUX |
| Winters Doula Services, L.L.C. | — | DL220270 | 2022-02-09 | Dissolved | Sioux Falls |
| Winterset Concert Events LLC | — | DL302396 | 2025-06-13 | Active | Rapid City |
| WINTERSET FARMS, LLC | — | DL040187 | 2014-09-03 | Active | HURON |
| WINTERSTEEN AUCTION, INC. | — | DB031531 | 1992-03-12 | Dissolved | — |
| WINTERSTEEN FAMILY, L.L.C. | — | DL001061 | 1996-12-23 | Active | Sioux Falls |
| WINTERSTEEN LEASING, INC. | — | DB034071 | 1994-02-22 | Dissolved | SIOUX FALLS |
| Winterwood Bakehouse, LLC | — | DL298376 | 2025-04-21 | Active | Spearfish |
| WinterWorx Repair and Renovation LLC | — | DL293451 | 2025-02-17 | Dissolved | Hartford |
| Winther Ag Services, LLC | — | DL045791 | 2015-11-09 | Active | MINA |
| Winthrop & Weinstine, P.A. D/B/A Winthrop & Weinstine, P.A., Inc. | — | FB276612 | 2024-06-07 | Active | MINNEAPOLIS |
| WINTHROP & WEINSTINE, P.A. D/B/A WINTHROP & WEINSTINE, P.A.,INC. | — | FB018796 | 1996-03-27 | Revoked | MINNEAPOLIS |
| WINTHROP AREA DEVELOPMENT ASSOCIATION, INC. | — | 19610009ND | 1961-06-12 | Canceled | — |
| WINTHROP CEMETERIES ASSOCIATION | — | 19090014N | 1909-08-31 | Active | — |
| WINTHROP FUEL CO., INC. | — | 19560131D | 1956-01-10 | Active | — |
| WINTHROP HOLDINGS, L.L.C. | — | DL007002 | 2004-02-27 | Inactive | — |
| WINTHROP RESOURCES CORPORATION | — | FB013351 | 1990-01-25 | Inactive | MINNETONKA |
| WINTHROP ROYAL ARCH CHAPTER ASSOCIATION | — | 19300011ND | 1930-12-31 | Active | — |
| WINTHROP SECURITIES CO., INC. | — | FB008195 | 1982-02-04 | Inactive | BOSTON |
| Winthrop Services LLC | — | DL279087 | 2024-07-17 | Active | Herreid |
| WINTHROP STREET UNIVERSALIST CHURCH | — | 19510014N | 1951-12-21 | Merged | — |
| WINTON ROAD DISTRICT | — | DM009468 | 2000-06-22 | Active | RAPID CITY |
| WINTRUST ASSET FINANCE INC. | — | FB129033 | 2016-12-27 | Active | FRISCO |
| WINTZ & RAY FUNERAL HOME AND CREMATION SERVICE, INC. | — | DB041824 | 1999-09-10 | Active | YANKTON |
| Wintz Brothers Funeral Services LLC | — | DL328014 | 2026-05-06 | Active | Yankton |
| Wintz Brothers Holding Company LLC | — | DL329030 | 2026-05-18 | Active | Yankton |
| WINTZ FAMILY FUNERAL SERVICE, INC. | — | DB042216 | 1999-12-28 | Active | YANKTON |
| WINTZ FREIGHT SYSTEMS, INC. | — | FB011307 | 1987-02-09 | Revoked | ST. PAUL |
| WINWATER SIOUX FALLS SD CO. | — | FB033615 | 2009-07-02 | Active | Moraine |
| WINYAN | — | NS006944 | 1980-05-27 | Inactive | — |
| Winyan Witko LLC | — | DL333274 | 2026-09-06 | Active | MARTIN |
| Winzer Franchise Company, Inc. | — | FB270478 | 2024-03-11 | Active | Plano |
| WIPC, LLC | — | FL000328 | 1998-06-22 | Revoked | DALLAS |
| Wipcount Media LLC | — | DL221436 | 2022-02-24 | Inactive | Sioux Falls |
| Wipe it Right Tape and Texture LLC | — | DL169239 | 2019-08-26 | Dissolved | Rapid City |
| Wipe the Sky, LLC | — | DL270212 | 2024-03-07 | Active | CRESBARD |