| THE SPEARFISH AREA HISTORICAL SOCIETY | — | NS011108 | 1998-10-01 | Active | Spearfish |
| THE SPEARFISH BUTCHER SHOP, LLC | — | DL016684 | 2008-06-09 | Suspended | SPEARFISH |
| THE SPEARFISH FREE METHODIST CHURCH | — | CH001714 | 1947-06-05 | Inactive | — |
| THE SPEARFISH PAINT & PALLETTE CLUB | — | NS000007 | 1958-02-14 | Dissolved | — |
| THE SPEARFISH SENIOR SERVICE CENTER | — | NS005205 | 1972-11-17 | Active | SPEARFISH |
| The Specialty Crop Collaborative | — | NS273863 | 2024-04-29 | Active | HUDSON |
| The Specialty Crop LLC | — | DL271339 | 2024-03-22 | Active | Hudson |
| The Speckled Hen, LLC | — | DL271186 | 2024-03-20 | Active | Hudson |
| THE SPECTACLE SHOP, L.L.C. | — | DL001525 | 1998-01-08 | Active | YANKTON |
| THE SPECTRANETICS CORPORATION | — | FB030439 | 2006-03-08 | Inactive | COLORADO SPRINGS |
| The Speech Mom LLC | — | DL128645 | 2016-12-14 | Active | Sioux Falls |
| THE SPEED CENTER, LLC | — | DL016173 | 2008-04-09 | Dissolved | RAPID CITY |
| The Spell Jar, LLC | — | DL213850 | 2021-11-05 | Dissolved | SIOUX FALLS |
| THE SPELMAN & JOHNSON GROUP, INC. | — | FB245796 | 2023-03-06 | Active | EASTHAMPTON |
| THE SPENCE LAW FIRM, LLC | — | FL006172 | 2012-03-02 | Active | Jackson |
| THE SPERRY AND HUTCHINSON COMPANY, INC. | — | FB007995 | 1981-10-23 | Revoked | NORTH BELLMORE |
| THE SPIRIT CANYON ROAD DISTRICT | — | TD197665 | 2021-03-01 | Active | — |
| THE SPIRIT MOUND TELEPHONE COMPANY | — | PU003152 | 1913-04-25 | Active | — |
| THE SPIRIT OF ELIJAH MINISTRIES INTERNATIONAL | — | FN011345 | 2012-10-05 | Revoked | BULVERDE |
| THE SPIRIT OF MADISON BAND PARENTS, INC. | — | NS009599 | 1992-03-30 | Active | MADISON |
| THE SPIRITUAL ASSEMBLY OF THE BAHA'IS OF SIOUX FALLS, SOUTH DAKOTA | — | NS000625 | 1963-07-11 | Inactive | — |
| The Spiritual Way | — | FN254670 | 2023-07-14 | Inactive | Wichita Falls |
| THE SPLAT ZONE, INC. | — | DB051605 | 2006-10-12 | Inactive | — |
| The Spoken Word, Inc. | — | FN224838 | 2022-04-13 | Inactive | Fernandina Beach |
| THE SPORT CLINIC, P.C. | — | DB024804 | 1985-10-18 | Dissolved | MITCHELL |
| THE SPORTING LEGEND PUBLISHING GROUP, INC. | — | DB040633 | 1998-10-26 | Inactive | — |
| The Sports Academy LLC | — | DL046845 | 2016-01-25 | Dissolved | WAGNER |
| The Sports Brief Podcast LLC | — | DL261519 | 2023-10-28 | Dissolved | Rapid City |
| THE SPORTS STOP, INC. | — | DB031435 | 1992-02-18 | Inactive | — |
| THE SPORTSMAN'S CLUB OF BROWN COUNTY | — | NS002679 | 1953-08-29 | Active | Aberdeen |
| THE SPORTSMAN'S PUB, INC. | — | DB022027 | 1982-12-27 | Inactive | — |
| THE SPOT - HWY 100 LLC | — | DL256384 | 2023-08-09 | Active | SIOUX FALLS |
| THE SPOT DRIVE-IN, LLC | — | DL019217 | 2009-06-24 | Inactive | FLANDREAU |
| The Spot Drive-In29, Inc | — | DB055190 | 2010-03-05 | Active | FLANDREAU |
| The Spot Massage LLC | — | DL252795 | 2023-06-13 | Dissolved | Hot Springs |
| THE SPOT, INCORPORATED OF BRITTON | — | DB026314 | 1987-04-23 | Dissolved | BRITTON |
| THE SPOTTED MARKET, INC. | — | DB045874 | 2002-09-13 | Dissolved | — |
| THE SPRAGUE CORPORATION | — | 19200014D | 1920-05-27 | Active | — |
| The Spray Studio LLC | — | DL275735 | 2024-05-25 | Active | PIERRE |
| THE SPRING VALLEY CEMETERY ASSOCIATION | — | NS001956 | 1898-04-28 | Active | Pollock |
| The Springcreek Group, LLC | — | DL147544 | 2018-04-30 | Dissolved | Rapid City |
| THE SPRINGFIELD CEMETERY ASSOCIATION, INC. | — | NS009067 | 1989-11-30 | Inactive | — |
| THE SPRINGFIELD CLUB | — | NS000826 | 1965-05-21 | Inactive | — |
| THE SPRINGS AREA COUNCIL OF THE ARTS (SACOTA) | — | NS009798 | 1993-01-29 | Active | Wessington Springs |
| THE SPRINGS CHURCH | — | NS283139 | 2024-09-16 | Active | STURGIS |
| The Square on Main, LLC | — | DL169992 | 2019-09-10 | Active | SIOUX FALLS |
| The Squirts, LLC | — | DL254324 | 2023-07-10 | Dissolved | Corona |
| THE SR GROUP, LLP | — | DR000868 | 2005-01-07 | Inactive | ABERDEEN |
| THE ST. ALBANS UNION CHURCH | — | 19500003N | 1950-05-23 | Active | — |
| THE ST. JOE STREET FACTORY, INCORPORATED | — | DB045116 | 2002-02-15 | Dissolved | RAPID CITY |
| THE ST. JOHN ST. CORPORATION | — | 19670208D | 1967-05-12 | Dissolved | — |
| THE STABLE COFFEE HOUSE, INC. | — | NS006080 | 1976-09-01 | Dissolved | — |
| THE STACYVILLE VOLUNTEER FIRE DEPT. | — | 19510001ND | 1951-11-08 | Active | — |
| THE STAFFING AUTHORITY, INC. | — | FB025950 | 2002-02-08 | Inactive | NEW YORK |
| THE STAFFING AUTHORITY, LLC | — | FL001911 | 2004-03-15 | Inactive | NEW YORK |
| The Stag's Head, LLC | — | DL036786 | 2014-01-06 | Inactive | SIOUX FALLS |
| The Stage Stop LLC | — | DL177084 | 2020-02-09 | Active | McLaughlin |
| THE STAMP GARDEN, LLC | — | DL011818 | 2006-07-31 | Dissolved | SIOUX FALLS |
| THE STANDARD REGISTER COMPANY | — | 19660038F | 1966-07-20 | Active | — |
| THE STANLEY AND MARILYN MADISON FAMILY LIMITED PARTNERSHIP | — | DP000829 | 1998-02-24 | Active | — |
| THE STANWOOD WILDLIFE SANCTUARY | — | 19590043ND | 1959-10-19 | Active | — |
| THE STAPLES GROUP, INC. | — | FB301347 | 2025-05-29 | Active | FRAMINGHAM |
| THE STAR RESTAURANT, INCORPORATED | — | DB010300 | 1970-10-19 | Inactive | — |
| THE STAR TRIBUNE COMPANY | — | FB022693 | 1999-06-30 | Revoked | MINNEAPOLIS |
| THE STARLIGHT FOUNDATION | — | NS011680 | 2001-01-30 | Dissolved | RAPID CITY |
| THE STATE COLLEGE DEVELOPMENT ASSOCIATION | — | NS005617 | 1930-01-13 | Active | BROOKINGS |
| THE STATE GROUP INDUSTRIAL (USA) LIMITED | — | FB030972 | 2006-09-20 | Active | EVANSVILLE |
| THE STATE STREET CONGREGATIONAL CHURCH OF THE UNITED CHURCH OF CHRIST | — | 19140002L | 1914-04-13 | Active | — |
| THE STATE YOUNG MEN'S CHRISTIAN ASSOCIATION OF MAINE | — | 19070001ND | 1907-02-20 | Active | — |
| The Station Tyler And Houston LLC | — | DL213322 | 2021-10-29 | Active | Sioux Falls |
| The Station, LLC | — | DL191242 | 2020-11-13 | Dissolved | Elkton |
| The Statuary USA, Inc. | — | DB059644 | 2014-12-15 | Active | SIOUX FALLS |
| THE STATUARY, L.L.C. | — | DL007376 | 2004-05-21 | Active | SIOUX FALLS |
| THE STAUBACH COMPANY - MIDWEST, INC. | — | FB014617 | 1991-06-11 | Revoked | DALLAS |
| THE STEAK OUT, INC. | — | DB049495 | 2005-03-30 | Dissolved | FAULKTON |
| THE STEBBINS ENGINEERING AND MANUFACTURING COMPANY | — | 19640019F | 1964-05-21 | Active | — |
| The Steel Barn, LLC | — | DL141320 | 2017-12-20 | Dissolved | FAULKTON |
| The Steelhead Engineering Company, LLC | — | FL288126 | 2024-12-03 | Active | Kalamazoo |
| THE STEEP FALLS CEMETERY CORPORATION | — | 19140003N | 1914-05-11 | Active | — |
| The Steier Group, Inc. | — | FB175268 | 2020-01-03 | Active | Omaha |
| THE STELLIUM CORPORATION | — | DB041040 | 1999-02-03 | Inactive | — |
| The Stensland Foundation | — | NS252988 | 2023-06-16 | Active | LARCHWOOD |
| THE STEPHAN LADIES SOCIETY | — | NS014604 | 2011-05-16 | Active | HIGHMORE |
| THE STEPHEN B. CHURCH COMPANY | — | 19580015F | 1958-07-17 | Revoked | — |
| The Stepping Stones Group LLC | — | FL203705 | 2021-05-27 | Active | Chicago |
| THE STERITECH GROUP, INC. | — | FB023417 | 2000-01-12 | Inactive | CHARLOTTE |
| THE STERLING INSURANCE AGENCY, INC. | — | DB047755 | 2004-01-07 | Dissolved | BROOKINGS |
| THE STERLING ROSE, LLC | — | DL003776 | 2001-05-16 | Inactive | — |
| THE STERNER CREW, INC. | — | FB034003 | 2009-12-09 | Inactive | WAVERLY |
| THE STEWARDSHIP TRUST | — | NS010878 | 1997-09-29 | Inactive | — |
| THE STEWART LIBRARY ASSOCIATION | — | 19220015ND | 1922-11-03 | Active | — |
| THE STEWART/PERRY COMPANY, INC. | — | FB012099 | 1988-05-20 | Inactive | BIRMINGHAM, |
| THE STICKNEY AREA JAYCETTES | — | NS006583 | 1978-09-25 | Inactive | — |
| THE STICKNEY AREA JUNIOR CHAMBER OF COMMERCE D/B/A THE STICKNEY JAYCEES | — | NS005886 | 1975-10-20 | Inactive | — |
| The Sticks, LLC | — | DL201185 | 2021-04-19 | Active | GARDEN CITY |
| the still apocalypse lounge l.l.c | — | DL229206 | 2022-06-20 | Active | Lead |
| The Stirrup Co. LLC | — | DL329525 | 2026-05-23 | Active | Chamberlain |
| THE STOCK MENTOR, LLC | — | DL018764 | 2009-04-22 | Dissolved | RAPID CITY |
| THE STOCKER CONSTRUCTION COMPANY | — | FB025318 | 2001-07-09 | Inactive | WEBSTER GOVES |
| The Stone, LLC | — | DL165562 | 2019-06-05 | Active | flandreau |
| THE STONINGTON CHURCH OF THE NAZARENE | — | 19620017N | 1962-10-15 | Active | — |
| The Storage, LLC | — | DL138957 | 2017-10-25 | Active | Redfield |
| THE STORE PROPERTIES, LLC | — | DL035655 | 2013-10-28 | Active | WINNER |
| THE STORE, LLC | — | DL029484 | 2012-09-20 | Active | WINNER |
| THE STOREHOUSE COMMUNITY FOOD PANTRY | — | NS277360 | 2024-06-20 | Active | DELL RAPIDS |
| The Stork SD, LLC | — | DL145928 | 2018-03-26 | Inactive | HARTFORD |
| The Stork Shoppe, LLC | — | DL185955 | 2020-08-12 | Inactive | Sioux Falls |
| THE STORLA SUNSET HOME | — | NS002741 | 1955-05-02 | Inactive | — |
| THE STRAIT FROM TEXAS LIMITED PARTNERSHIP | — | DP001222 | 2000-11-13 | Inactive | — |
| THE STRATEGY DISTRICT, LLC | — | DL208044 | 2021-08-10 | Dissolved | Cheyenne |
| THE STRATTON GROUP, INC. | — | DB036895 | 1996-03-01 | Dissolved | SIOUX FALLS |
| The Strawberry Man Family of Books & Films LLC | — | DL204733 | 2021-06-15 | Suspended | ABERDEEN |
| The Stream, LLC | — | DL048411 | 2016-05-09 | Inactive | Charlestown |
| THE STRICKLAND COMPANY | — | 19460031D | 1946-03-21 | Dissolved | — |
| THE STRIDER GROUP, LLC | — | DL004835 | 2002-06-13 | Inactive | — |
| The Stroller LLC | — | DL316297 | 2025-12-30 | Active | Mitchell |
| The Stroud Family, LLC | — | DL038858 | 2014-05-16 | Inactive | Indio |
| THE STRY GROUP, INC. | — | DB046153 | 2002-12-09 | Inactive | — |
| THE STUART CORPORATION | — | FB012512 | 1988-12-23 | Inactive | ST. PAUL |
| THE STUDENT CONSERVATION ASSOCIATION, INC. | — | FN010594 | 1999-04-07 | Active | Arlington |
| THE STUDENT LOAN CORPORATION DBA STUDENT LOAN CORP. (DELAWARE) | — | FB024495 | 2000-11-02 | Active | McLean |
| THE STUDER GROUP, L.L.C. | — | FL043157 | 2014-12-16 | Inactive | PENSACOLA |
| The Studio 605 LLC | — | DL164173 | 2019-05-05 | Dissolved | Sioux Falls |
| THE STUDIO AT PHOTOS TO GO, INC. | — | DB026670 | 1987-09-02 | Active | Pierre |
| The Studio by Eshaiya and Matagi LLC | — | DL201798 | 2021-04-27 | Dissolved | Wagner |
| The Studio Ltd. Co. | — | DL047700 | 2016-03-23 | Active | MILBANK |
| THE STUDIO, L.L.C. | — | DL000270 | 1994-10-20 | Dissolved | — |
| THE STUDIO, LLC | — | DL039325 | 2014-06-26 | Dissolved | RAPID CITY |
| The Study Guide LLC | — | DL332708 | 2026-07-07 | Active | Bronx |
| THE STUDY LOUNGE LTD. CO | — | DL324528 | 2026-03-28 | Active | GARRETSON |
| The Study, LLC | — | DL204932 | 2021-06-17 | Active | Rapid City |
| The Sturdevant Group, LLC | — | DL050183 | 2016-10-03 | Dissolved | SIOUX FALLS |
| THE STURGIS BELT COMPANY, INC. | — | DB031605 | 1992-03-30 | Inactive | — |
| THE STURGIS MOTORCYCLE CLUB, INC. | — | DB031327 | 1992-01-13 | Dissolved | — |
| THE STURGIS TRADING POST, LLC | — | DL024471 | 2011-04-20 | Dissolved | STURGIS |
| The Style Hair Studio LLC | — | DL197557 | 2021-02-27 | Active | Gary |
| THE SUB HUB OF SIOUX FALLS, LLC | — | DL018094 | 2009-01-15 | Inactive | SIOUX FALLS |
| THE SUCCESS INC | — | DB256252 | 2023-08-08 | Active | Watertown |
| The Suite LLC | — | DL244373 | 2023-02-13 | Active | Sioux Falls |
| The Suite Nail Room LLC | — | DL173220 | 2019-11-19 | Dissolved | Sioux Falls |
| THE SULLIVAN AGENCY, INC. | — | FB022626 | 1999-06-07 | Revoked | FARGO |
| THE SULLIVAN CORPORATION D/B/A MAYFAIR, INC. | — | FB025815 | 2001-12-26 | Active | NOBLESVILLE |
| THE SULLIVAN CORPORATION D/B/A MAYFAIR, INC. | — | FB017215 | 1994-08-26 | Revoked | NOBLESVILLE |
| THE SULLY COUNTY LAND & ABSTRACT COMPANY OF ONIDA, SOUTH DAKOTA | — | DB006455 | 1934-12-24 | Inactive | — |
| THE SUMMIT AT COTTONWOOD CREEK | — | NS011316 | 1999-08-05 | Active | SIOUX FALLS |
| The Summit at Deadwood Stage Run, LLC | — | DL222270 | 2022-03-08 | Active | Clark |
| THE SUMMIT AT SPEARFISH | — | NS007057 | 1981-01-06 | Active | Spearfish |
| THE SUMMIT AT VAN EPS APARTMENTS LIMITED PARTNERSHIP | — | DP307826 | 2025-08-22 | Active | MADISON |
| THE SUMMIT AT VAN EPS, LLC | — | DL307996 | 2025-08-28 | Active | MADISON |
| THE SUMMIT BUILDING, LLC | — | DL007053 | 2004-03-15 | Inactive | Sioux Falls |
| The Summit Church | — | NS188531 | 2020-09-29 | Active | SIOUX FALLS |
| The Summit Enterprise, Inc. | — | FB256173 | 2023-08-07 | Active | Lees Summit |
| THE SUMMIT GROUP OF DETROIT, MICHIGAN, LLC | — | DL004966 | 2002-08-05 | Dissolved | SIOUX FALLS |
| THE SUMMIT GROUP, INC. | — | DB030864 | 1991-08-08 | Dissolved | SIOUX FALLS |
| The Summit League, Inc | Arts and entertainment | NS166076 | 2019-06-17 | Active | SIOUX FALLS |
| The Summit League, Inc. | — | FB149412 | 2018-06-08 | Inactive | Sioux Falls |
| The Summit Livestock Show | — | NS310964 | 2025-10-07 | Active | Sioux Falls |
| THE SUN PRAIRIE FARM MUTUAL INSURANCE COMPANY OF MCCOOK COUNTY, SOUTH DAKOTA | — | IN000086 | 1945-06-01 | Dissolved | — |
| The Sunburnt Rattlesnake LLC | — | DL277794 | 2024-06-26 | Active | Black Hawk |
| THE SUNDANCE GROUP, INC. | — | DB054444 | 2009-04-15 | Active | Tea |
| THE SUNDERLAND GROUP, LTD. | — | FB022502 | 1999-05-05 | Active | Summit |
| THE SUNRIDER CORPORATION | — | FB010211 | 1985-05-03 | Revoked | TORRANCE, |
| THE SUNSHINE BIBLE ACADEMY OF MILLER, S.D. | — | NS006906 | 1951-06-04 | Active | Miller |
| THE SUNSHINE CLUB OF DEXTER, MAINE | — | 19350005ND | 1935-01-14 | Active | — |
| THE SUPERIOR OIL COMPANY | — | FB002040 | 1963-04-18 | Revoked | HOUSTON |
| THE SUPERIOR OIL COMPANY | — | FB010910 | 1986-06-04 | Inactive | IRVING |
| THE SUPPER CLUB LLC | — | DL172081 | 2019-10-23 | Dissolved | Rapid City |
| The Support Circle Collective | — | NS260839 | 2023-10-16 | Active | MOBRIDGE |
| The Support Circle, Inc. | — | DB131145 | 2017-03-01 | Active | Mobridge |
| THE SURE FOUNDATION | — | NS013186 | 2006-07-25 | Inactive | — |
| THE SURETY AGENCY, INC. D/B/A BRAD HAYES' COMPANY | — | FB025722 | 2001-11-21 | Active | MINNETONKA |
| THE SURETY GROUP AGENCY, LLC | — | FL003922 | 2008-01-28 | Inactive | MOUNT JULIET |
| The Surge Center LLC | — | DL311217 | 2025-10-14 | Active | Sioux Falls |
| THE SURGE PRO'S, INC. | — | DB047609 | 2003-12-10 | Dissolved | — |
| THE SURGICAL INSTITUTE OF SOUTH DAKOTA, P.C. | — | DB022745 | 1983-09-22 | Active | Sioux Falls |
| THE SUSQUEHANNA CORPORATION | — | FB010755 | 1986-03-10 | Revoked | ENGLEWOOD, |
| The Sustainable Innovation and Design Company, LLC | — | DL155069 | 2018-10-12 | Dissolved | RAPID CITY |
| THE SUTHER FAMILY LIMITED PARTNERSHIP | — | DP000514 | 1996-01-16 | Inactive | — |
| The Swaha Life LLC | — | DL223154 | 2022-03-21 | Dissolved | Rapid City |
| THE SWANSON CORPORATION | — | FB011202 | 1986-12-01 | Inactive | OMAHA |
| The Swatch Group (U.S.) Inc. | — | FB173531 | 2019-11-26 | Active | Miami |
| THE SWEAT CEMETERY ASSOCIATION | — | 19030000N | 1903-07-23 | Active | — |
| The Sweat Society LLC | — | DL296419 | 2025-03-25 | Active | Platte |
| The Sweat Studio LLC | — | DL250668 | 2023-05-12 | Dissolved | Huron |
| THE SWEAT ZONE, LLC | — | DL263334 | 2023-11-29 | Active | Aberdeen |
| The Sweet Georgia Jar, LLC | — | DL308436 | 2025-09-03 | Active | Wentworth |
| THE SWEET LIFE, INC. | — | DB028563 | 1989-07-17 | Inactive | — |
| The Sweetbridge Group LLC | — | DL040915 | 2014-11-05 | Active | Sioux Falls |
| THE SWEETLAND CEMETERY ASSOCIATION | — | 19310012N | 1931-10-21 | Active | — |
| THE SWENSON LAW FIRM, P.C. | — | DB045738 | 2002-08-01 | Inactive | — |
| THE SYGMA NETWORK, INC. | — | FB025469 | 2001-09-05 | Active | DUBLIN |
| THE SYGMA NETWORK, INC. | — | FB010635 | 1985-12-31 | Inactive | LAKEWOOD |
| The Syllabus LLC | — | DL216068 | 2022-01-01 | Inactive | Watertown |
| The Syndicate LLC | — | DL226417 | 2022-05-05 | Suspended | WATERTOWN |
| THE SYNERGIX LLC | — | DL303883 | 2025-07-03 | Active | Sioux Falls |
| THE SYNOD OF LAKES AND PRAIRIES OF THE UNITED PRESBYTERIAN CHURCH IN THE UNITED STATES OF AMERICA | — | FN004308 | 1973-03-20 | Revoked | BLOOMINGTON |
| THE SYSTEMS HEALTHCARE INDEPENDENT PROVIDERS, L.L.C. | — | DL001245 | 1997-05-27 | Dissolved | — |
| THE SYSTEMS HOUSE, INC. | — | FB025609 | 2001-10-23 | Inactive | DES PLAINES |
| The T&C Legacy Foundation, Inc. | — | NS274035 | 2024-04-30 | Active | Dakota Dunes |
| THE T. L. C. NURSING HOME, INC. | — | DB005021 | 1965-05-24 | Inactive | — |