| SOMNITECH, INC. | FB026608 | 2002-09-16 | Active | Edmond |
| SOMNITECH, INC. | FB021052 | 1998-02-27 | Revoked | OVERLAND PARK |
| Somnolex, P.C. | DB262435 | 2023-11-13 | Active | Box Elder |
| Somodo LLC | DL205846 | 2021-07-02 | Dissolved | Sioux Falls |
| SOMODY MERCHANDISING, INC. | FB023431 | 2000-01-19 | Inactive | COMMERCE |
| SOMODY SUPPLY, INC. | FB015730 | 1992-12-11 | Inactive | WILLMAR |
| SOMODY, INC. | FB026284 | 2002-05-24 | Revoked | WILMINGTON |
| SOMONA EAST LLC | DL148809 | 2018-05-25 | Inactive | Vermillion |
| Somp's Shake & Make, LLC | DL304278 | 2025-07-09 | Active | Webster |
| SOMPO AMERICA INSURANCE SERVICES LLC | FL001953 | 2004-04-26 | Inactive | CHARLOTTE |
| SOMSA Mitchell Building, LLC | DL308532 | 2025-09-04 | Active | SIOUX FALLS |
| SOMSA Worthington Building, LLC | DL322247 | 2026-03-02 | Active | Sioux Falls |
| SOMSA Yankton Building, LLC | DL288931 | 2024-12-13 | Active | SIOUX FALLS |
| SOMSEN AGENCY, INC. | DB043591 | 2000-12-28 | Dissolved | Yankton |
| SOMSEN REAL ESTATE, L.L.C. | DL014527 | 2007-08-24 | Inactive | Yankton |
| SOMSEN-HUBBS AGENCY, INC. | DB040720 | 1998-11-23 | Dissolved | — |
| SoMuch.so, LLC | DL217662 | 2022-01-03 | Inactive | Box Elder |
| Somul Management LLC | DL244140 | 2023-02-10 | Suspended | Watertown |
| SON OF A GUN RANCH, LLC | DL013796 | 2007-05-01 | Dissolved | BOWDLE |
| SON OF ZADE, LLC | DL021331 | 2010-04-23 | Dissolved | BROOKINGS |
| SON SHIELD USA LLC | DL304043 | 2025-07-07 | Active | Redding |
| SON-RISE PROPERTIES, INC. | DB031413 | 1992-02-10 | Dissolved | — |
| SON-SHINE CHRISTIAN SCHOOL | NS007869 | 1984-05-28 | Inactive | — |
| SONA GROCERY STORE LLC | DL246482 | 2023-03-15 | Dissolved | SIOUX FALLS |
| SONADOR GROUP, LLC | DL011067 | 2006-04-06 | Dissolved | CANTON |
| Sonador, Inc. | DB166000 | 2019-06-14 | Active | Madison |
| Sonar Studios LLC | DL042988 | 2015-04-21 | Dissolved | SPEARFISH |
| SONAT EXPLORATION COMPANY | FB015319 | 1992-06-15 | Inactive | HOUSTON |
| SONAT EXPLORATION COMPANY | FB006547 | 1979-02-23 | Revoked | HOUSTON |
| Sonata Cleaning Co., LLC | DL254421 | 2023-07-11 | Dissolved | Rapid City |
| Soncy Cycles, LLC | DL228264 | 2022-06-03 | Active | Spearfish |
| SonCycle Renewables, Inc. | DB259504 | 2023-09-25 | Dissolved | Clear Lake |
| Sonder Apothecary LLC | DL298945 | 2025-04-28 | Suspended | Sioux Falls |
| SONDER ENERGY, LLC | FL298583 | 2025-04-23 | Active | Raleigh |
| Sonder Route Inc | DB329218 | 2026-05-20 | Active | Sioux Falls |
| Sonder Therapeutic Services LLC | DL250614 | 2023-05-11 | Suspended | Sioux Falls |
| SonderMind Provider Network, LLC | FL278674 | 2024-07-11 | Active | Denver |
| SONDREAL HOLDINGS LLC | DL170880 | 2019-09-30 | Active | Huron |
| Sonen Construction LLC | DL134954 | 2017-07-11 | Dissolved | Chester |
| SONESS ORGANICS, LLC | DL029806 | 2012-10-26 | Dissolved | HAWARDEN |
| SONETEX, INC. | DB032305 | 1992-11-12 | Inactive | — |
| Sonetex, LLC | DL282979 | 2024-09-13 | Active | Edmond |
| SONG AND DANCE FOLKS, INC. | NS008463 | 1987-02-03 | Dissolved | — |
| Song Dog Creative LLC | DL179381 | 2020-03-31 | Suspended | Sioux Falls |
| SONGBIRD ACRES NO. II WATER ASSOCIATION, INC. | NS008843 | 1988-11-07 | Inactive | — |
| SONGBIRD ENITIES CORPORATION | DB148214 | 2018-05-14 | Dissolved | SIOUX FALLS |
| SONGBIRD PRODUCTIONS, L.L.C. | DL008037 | 2004-10-14 | Inactive | VOLGA |
| Songbird Productions, LLC | DL187623 | 2020-09-14 | Dissolved | Vermillion |
| SONGBIRD, L.L.C. | DL002197 | 1999-04-12 | Inactive | SIOUX FALLS |
| Songdog Investments LLC | DL186611 | 2020-08-25 | Active | Rapid City |
| Songer Trucking, LLC | DL206542 | 2021-07-15 | Active | HURON |
| SONGO BEACH ASSOCIATION | 19640020ND | 1964-03-11 | Active | — |
| SONGO OF MAINE, INC. | 19520059D | 1952-11-17 | Suspended | — |
| Songs for Centuries Inc. | DB146263 | 2018-04-02 | Active | SIOUX FALLS |
| Songs for Centuries Legacy Opportunity Zone Fund Inc | DB267222 | 2024-01-26 | Dissolved | Sioux Falls |
| Songs For Centuries Studio One, LLC | DL188776 | 2020-10-05 | Dissolved | Sioux Falls |
| songsNsawdust LLC | DL256713 | 2023-08-15 | Active | Gann Valley |
| SONGSTAD & SONS, LLC | DL045136 | 2015-09-16 | Dissolved | RAPID CITY |
| SONGSTAD INVESTMENTS LLC | DL198001 | 2021-03-05 | Dissolved | RAPID CITY |
| SONI JUNE WILCOX - MISSIONARY EVANGELISM MINISTRIES | NS011601 | 2000-09-14 | Active | HOT SPRINGS |
| SONIC AUTOMOTIVE PROTECTION PRODUCTS, INC. | FB280146 | 2024-07-31 | Revoked | CHARLOTTE |
| Sonic Boom Entertainment LLC | DL308533 | 2025-09-04 | Active | Rapid City |
| SONIC CASH OF SOUTH DAKOTA, LLC | DL014284 | 2007-07-18 | Dissolved | BOISE |
| SONIC DIVISIONAL OPERATIONS, LLC | FL244133 | 2023-02-10 | Active | Charlotte |
| SONIC FRANCHISING LLC | FL005645 | 2011-04-14 | Active | Oklahoma City |
| Sonic Ice Breaking System LLC | DL262311 | 2023-11-09 | Dissolved | HOT SPRINGS |
| SONIC INDUSTRIES FRANCHISING LLC | FL003893 | 2008-01-11 | Inactive | OKLAHOMA CITY |
| SONIC INDUSTRIES SERVICES LLC | FL241398 | 2023-01-03 | Active | OKLAHOMA CITY |
| SONIC INDUSTRIES SERVICES, INC. | FB031970 | 2007-09-05 | Inactive | OKLAHOMA CITY |
| SONIC INDUSTRIES, LLC | FL003801 | 2007-11-01 | Active | Oklahoma City |
| SONIC LAND I LLC | DL047091 | 2016-02-12 | Inactive | RAPID CITY |
| SONIC LAND II LLC | DL047092 | 2016-02-12 | Inactive | RAPID CITY |
| SONIC LAND V LLC | DL132906 | 2017-04-26 | Dissolved | RAPID CITY |
| SONIC LLC | DL003523 | 2001-01-24 | Dissolved | — |
| Sonic Management, Inc. | DB160727 | 2019-02-22 | Dissolved | SUWANEE |
| SONIC MARKETING LLC | FL302372 | 2025-06-12 | Active | HOLMDEL |
| SONIC SPOOK, INC. | DB026686 | 1987-09-09 | Inactive | — |
| SONIC SYSTEMS INTERNATIONAL, LLC | FL328897 | 2026-05-15 | Active | WILMINGTON |
| Sonica LLC | DL291800 | 2025-01-26 | Active | Watertown |
| SONIFI HEALTH, INC. | FB035055 | 2011-04-01 | Active | Sioux Falls |
| SONIFI INC. | RS005843 | 2013-06-18 | Active | — |
| SONIFI SOLUTIONS, INC. | FB016409 | 1993-10-07 | Active | Sioux Falls |
| SONITROL CORPORATION | FB024592 | 2000-11-30 | Inactive | WESTLAKE |
| SONITROL MANAGEMENT CORPORATION | FB016529 | 1993-12-01 | Revoked | WILMINGTON |
| SONIX4U, INC. | FB025226 | 2001-06-12 | Revoked | ALPHARETTA |
| SONJA'S HEALTHVINE, LLC | DL029529 | 2012-09-25 | Dissolved | PIERRE |
| SONLER PROPERTIES, LLC | DL012610 | 2006-12-04 | Active | SIOUX FALLS |
| SONLIGHT CHILDREN'S FOUNDATION, INC. | NS137340 | 2017-09-21 | Active | ABERDEEN |
| SONLIGHT, INC. | NS010190 | 1994-10-13 | Inactive | — |
| Sonne Farms LLC | DL194020 | 2021-01-04 | Active | Mount Vernon |
| SONNE LABS, INC. | FB027499 | 2003-07-18 | Revoked | WAHPETON |
| SONNE'S LIVESTOCK MANAGEMENT SERVICE, LLC | DL022591 | 2010-10-08 | Active | LETCHER |
| Sonnel Holdings, LLC | DL269067 | 2024-02-22 | Active | Black Hawk |
| Sonnel Technologies, LLC | DL134927 | 2017-07-10 | Active | Black Hawk |
| SONNENBURG CONSTRUCTION, INC. | DB045253 | 2002-03-25 | Inactive | BROOKINGS |
| Sonnick Partners LLC | FL264376 | 2023-12-14 | Active | New York |
| Sonnino South Dakota FIT, LLC | DL241987 | 2023-01-11 | Active | Sioux Falls |
| SONNS, LLC | DL205304 | 2021-06-24 | Active | SIOUX FALLS |
| Sonny Acres, LLC | DL266182 | 2024-01-11 | Active | Huron |
| SONNY'S ENTERPRISES, LLC | FL215296 | 2021-11-30 | Active | TAMARAC |
| Sonny's Sign Service, LLC. | DL285201 | 2024-10-16 | Active | Crooks |
| Sonny's Water Systems, LLC | FL243446 | 2023-02-01 | Active | Tamarac |
| SonnyLove LLC | DL306298 | 2025-08-05 | Active | Sioux Falls |
| Sonnys Properties, LLC | DL151639 | 2018-07-27 | Active | Madison |
| SONNYS, LLC | DL135545 | 2017-08-01 | Active | MADISON |
| SoNo Ventures, LLC | DL132230 | 2017-05-01 | Inactive | Sioux Falls |
| SONOFAGUNNARSON INC. | DB057248 | 2012-10-26 | Dissolved | SIOUX FALLS |
| Sonoma Mountain GC Properties, LLC | DL202273 | 2021-05-04 | Active | HEALDSBURG |
| SONOMA NOMAD LLC | DL244066 | 2023-02-09 | Inactive | SIOUX FALLS |
| Sonoma Quail LLC | DL304517 | 2025-07-12 | Active | santa rosa |
| SONOMA RISK MANAGEMENT, LLC | FL005381 | 2010-11-01 | Inactive | LOS ANGELES |
| SONOMA TRADING COMPANY, INC. | DB029091 | 1990-01-19 | Dissolved | — |
| Sonora Core Marketing, Inc. | FB278949 | 2024-07-16 | Revoked | Sioux Falls |
| SONORA INSURANCE GROUP, LLC | FL005020 | 2010-03-05 | Revoked | BOERNE |
| Sonora Specialty Investments LLC | DL047562 | 2016-03-16 | Inactive | BOCA RATON |
| Sonoran Amigos, L.L.C. | DL130903 | 2017-02-21 | Active | RAPID CITY |
| SONORAN NATIONAL INSURANCE GROUP LLC | FL001708 | 2003-09-02 | Inactive | SCOTTSDALE |
| SONORAN SEA AMIGOS, LLC | DL011850 | 2006-08-04 | Dissolved | RAPID CITY |
| SONORANSUN08 L.L.C. | DL261462 | 2023-10-26 | Active | SPEARFISH |
| SONOSERVE CORP. | DB055040 | 2006-12-15 | Dissolved | SIOUX FALLS |
| SoNoWS, LLC | DL131261 | 2017-03-06 | Active | MITCHELL |
| Sonquist Lane Realty LLC | DL150595 | 2018-07-02 | Active | Rapid City |
| SONQUIST, LLC | DL030594 | 2012-12-19 | Active | RAPID CITY |
| SONRISE BAPTIST CHURCH | CH003486 | 2002-11-21 | Dissolved | SIOUX FALLS |
| SONRISE ENTERPRISES, L.L.C. | DL013248 | 2007-02-20 | Active | MARION |
| SONRISE NORTH ROAD DISTRICT FALL RIVER COUNTY, SOUTH DAKOTA | TD171002 | 2019-10-02 | Active | — |
| SONS & DAUGHTERS OF SOUTH DAKOTA PEARL HARBOR SURVIVORS | NS013404 | 2007-04-17 | Inactive | PIERRE |
| SONS OF GUNS, INC. | DB034436 | 1994-06-01 | Active | SIOUX FALLS |
| SONS OF ISRAEL CEMETERY SOCIETY | CH002800 | 1916-10-25 | Dissolved | SIOUX FALLS |
| SONS OF ITALY BUILDING CORPORATION | 19500015ND | 1950-03-08 | Active | — |
| Sons of Merritt A. Seefeldt Sr. Family Limited Partnership | DP140739 | 2017-12-07 | Active | CLARK |
| Sons Of Silence SD | NS262029 | 2023-11-06 | Active | Whitewood |
| SONS OF SOUTHFORK FOUNDATION | NS014496 | 2010-12-27 | Dissolved | SIOUX FALLS |
| SONS OF THE LAND | NS284760 | 2024-10-09 | Dissolved | Rapid City |
| Sons of the Prairie, LLC | DL288494 | 2024-12-09 | Active | Mission |
| SONS OF THUNDER, INC. | DB056220 | 2011-06-30 | Active | Hermosa |
| SONSATIONS, INC. | DB043662 | 2001-01-11 | Inactive | — |
| SONSET MARKETING, LLC | DL020684 | 2010-01-28 | Inactive | FREEMAN |
| SONSHINE INN, INC. | DB041318 | 1999-04-21 | Inactive | — |
| Sonshine Properties LLC | DL251779 | 2023-05-30 | Active | Hartford |
| Sonship Life | NS322293 | 2026-03-03 | Active | Watertown |
| Sonstegard Consulting, LLC | DL138182 | 2017-10-06 | Inactive | SIOUX FALLS |
| SONSTEGARD DESIGN & CONSTRUCTION, LLC | DL047797 | 2016-03-30 | Inactive | SIOUX FALLS |
| SONSTEGARD FOODS - TURNER COUNTY, LLC | DL046957 | 2016-02-03 | Active | SIOUX FALLS |
| SONSTEGARD FOODS COMPANY | DB025732 | 1986-09-29 | Active | SIOUX FALLS |
| SonTech Wireless, LLC | DL134928 | 2017-07-10 | Active | Black Hawk |
| SONTINET, LLC | DL002527 | 1999-10-18 | Dissolved | — |
| SONTOS, LLC | DL010100 | 2005-11-02 | Active | CUSTER |
| Sony Corporate Services Inc. | FB212070 | 2021-10-12 | Active | New York |
| SONY CORPORATION OF AMERICA | FB011790 | 1987-11-16 | Revoked | NEW YORK |
| SONY ONLINE ENTERTAINMENT INC. | FB029685 | 2005-06-10 | Inactive | CULVER CITY |
| SONY ONLINE ENTERTAINMENT LLC | FL003000 | 2006-06-30 | Inactive | SAN DIEGO |
| Sonya Eckel, LLC | DL247209 | 2023-03-24 | Active | Estelline |
| SONYA'S INTERNATIONAL, INC. | FB012106 | 1988-05-26 | Inactive | MADEIRA BEACH |
| SONYA'S SALON, L.L.C. | DL024873 | 2011-06-06 | Dissolved | SPEARFISH |
| SOO ALINEMENT, INC. | DB043489 | 2000-12-13 | Dissolved | BRANDON |
| SOO BASSMASTER OF SIOUX FALLS, INC. | NS006084 | 1976-09-03 | Inactive | — |
| SOO CAB COMPANY | DB000245 | 1958-09-26 | Dissolved | SIOUX FALLS |
| SOO DELL FARMS, LLC | DL047089 | 2016-02-12 | Active | HARTFORD |
| SOO DELL RENTAL PROPERTIES, LLC | DL015140 | 2007-11-26 | Dissolved | SIOUX FALLS |
| SOO FASTNER, INC. | DB012975 | 1975-07-01 | Dissolved | SIOUX FALLS |
| Soo Foo Tooth LLC | DL253150 | 2023-06-16 | Active | SIOUX FALLS |
| SOO IMPORT, INC. | DB002823 | 1962-06-22 | Active | SIOUX FALLS |
| SOO LAND GOLDWINGS, INC. | NS008797 | 1988-08-12 | Dissolved | SIOUX FALLS |
| SOO LINE RAILROAD COMPANY | FB001597 | 1961-01-12 | Active | Kansas City |
| SOO LINE TRAIL, LLC | DL025305 | 2011-07-28 | Inactive | RAPID CITY |
| SOO PHEASANT PROPERTIES | GP000028 | 2006-02-17 | Inactive | — |
| SOO PHEASANT PROPERTIES, LLC | DL024248 | 2011-03-30 | Dissolved | HUMBOLDT |
| SOO PORK, INC. | DB016488 | 1979-03-13 | Inactive | — |
| SOO REAL COMPANY, INC. | DB002210 | 1961-03-30 | Dissolved | — |
| SOO SANITARY EXCAVATING AND GRADING LLC | DL044687 | 2015-08-12 | Dissolved | Brandon |
| SOO SANITARY SERVICE, LLC | DL029267 | 2012-08-30 | Dissolved | VALLEY SPRINGS |
| SOO VALLEY DEVELOPMENT CORPORATION, INC. | DB012384 | 1974-06-27 | Dissolved | — |
| SOO-CAL CORPORATION | DB000786 | 1959-11-16 | Inactive | — |
| SOOBROOK FARMS, INC. | DF014468 | 1977-06-27 | Active | BROOKINGS |
| SOOFARM PARTNERS, L.L.P. | DR000338 | 1998-12-31 | Inactive | — |
| SooFoo Off Leash Dog Association | NS227923 | 2022-05-29 | Active | Sioux Falls |
| SooLand Concrete LLC | DL137395 | 2017-09-22 | Inactive | ARLINGTON |
| SOOLAND CONSTRUCTION CO. INC. | DB013460 | 1976-03-17 | Inactive | — |
| SOOLAND KOSHERING, INCORPORATED | FB011284 | 1987-01-19 | Revoked | HURON |
| Sooland Septic LLC | DL269834 | 2024-03-04 | Dissolved | Jefferson |
| SOON'S JADE GARDEN, INC. | DB032883 | 1993-04-02 | Inactive | — |
| Sooner Pilot Car Service LLC | DL238053 | 2022-11-06 | Dissolved | Black Hawk |
| SOOPER DOOPER MARKETS, INC. | DB000808 | 1959-12-14 | Dissolved | RAPID CITY |
| SOOPER STOP, INC. | DB033731 | 1993-12-16 | Active | ABERDEEN |
| Sooperstock Inc. | DB283039 | 2024-09-14 | Active | Los Angeles |
| Soothe Operator Bodywork LLC | DL133691 | 2017-05-24 | Inactive | Sioux Falls |
| Soothing Palms LLC | DL047567 | 2016-03-16 | Active | Marion |
| Soothing Touch Therapeutic Massage, LLC | DL139853 | 2017-11-15 | Inactive | SIOUX FALLS |
| SOP Certified Inc | DB231527 | 2022-07-27 | Dissolved | Watertown |
| SOPER SERVICES, LLC | DL004545 | 2002-03-11 | Inactive | — |
| SOPERS, INC. | DB035185 | 1994-12-27 | Active | GETTYSBURG |
| SOPHEUM INC | DB322236 | 2026-03-03 | Active | Watertown |
| Sophia 1RADA, LLC | DL274065 | 2024-05-01 | Active | Rapid City |
| Sophia ADAR1, LLC | DL273730 | 2024-04-26 | Active | Rapid City |
| Sophia Beatty LLC | DL241012 | 2022-12-27 | Active | Rapid City |
| Sophia Clarke Artistry LLC | DL318532 | 2026-01-20 | Active | Rapid City |
| SOPHIA I, INC. | FB135952 | 2017-08-15 | Inactive | Reston |
| SOPHIA'S SERVICES LLC | DL029216 | 2012-08-27 | Active | SIOUX FALLS |
| SophiaAstron LLC | DL252030 | 2023-06-01 | Active | Rapid City |