| Old Testament Trucking, LLC | DL138400 | 2017-10-13 | Dissolved | Dell Rapids |
| Old Thurston Hotel Building, LLC | DL190947 | 2020-11-09 | Active | Rapid City |
| OLD TIME FIDDLERS MUSEUM AND HALL OF FAME | NS007904 | 1984-07-18 | Dissolved | SIOUX FALLS |
| OLD TIME MUSIC, LLC | DL004906 | 2002-07-12 | Inactive | — |
| Old Timer LLC | DL169658 | 2019-09-04 | Active | Pierre |
| OLD TIMER LOG HOMES, L.L.C. | DL002329 | 1999-06-24 | Dissolved | — |
| OLD TIMERS RODEO OF SOUTH DAKOTA, INC. | NS006950 | 1980-06-10 | Dissolved | — |
| OLD TIRE MAN, LLC | DL012706 | 2006-12-15 | Inactive | DAKOTA DUNES |
| Old to Bold Furniture, LLC | DL135569 | 2017-08-01 | Dissolved | Black Hawk |
| Old To New Pressure Washing, LLC | DL226817 | 2022-05-11 | Dissolved | Beresford |
| OLD TOBOGGAN HILL HOMEOWNERS ASSOCIATION | NS013360 | 2007-03-06 | Inactive | — |
| OLD TOWN ASSOCIATES | 19550085D | 1955-07-07 | Dissolved | — |
| OLD TOWN CONGREGATION OF JEHOVAH'S WITNESSES | 19560018N | 1956-07-20 | Active | — |
| OLD TOWN FURNITURE COMPANY | 19150004D | 1915-02-12 | Suspended | — |
| OLD TOWN HALL INN, L.L.C. | DL003827 | 2001-06-07 | Dissolved | LEAD |
| OLD TOWN LODGE NO. 1287, BENEVOLENT AND PROTECTIVE ORDER OF ELKS OF THE UNITED STATES OF AMERICA | 19280004ND | 1928-05-24 | Active | — |
| OLD TOWN PROPERTIES, LLC | DL172638 | 2019-11-06 | Active | Spearfish |
| OLD TOWN RIVERSIDE GRANGE #273 P. OF H. | 19550056ND | 1955-11-16 | Active | — |
| OLD TOWN TRUE VALUE AND BUILDING SUPPLY COMPANY | 19240012D | 1924-12-23 | Dissolved | — |
| OLD TOWN, LLC | DL040486 | 2014-09-26 | Active | SPEARFISH |
| OLD TRAIL TELEPHONE COMPANY | PU006933 | 1954-02-05 | Inactive | — |
| OLD TREE DESIGNS INC. | DB056402 | 2011-10-18 | Dissolved | LOWELL |
| OLD TREE FARMS, L.L.P. | DR000708 | 2003-03-07 | Dissolved | — |
| OLD TREE FARMS, LLC | DA012856 | 2007-01-02 | Active | Volga |
| OLD WASHCO, INC. | DB028883 | 1989-11-16 | Inactive | — |
| OLD WEST AMMUNITION, INC. | DB021423 | 1982-04-05 | Inactive | — |
| OLD WEST APPALOOSA ASSOCIATION | NS007595 | 1983-06-13 | Inactive | — |
| OLD WEST AUCTION BARN INC. | DB033562 | 1993-10-25 | Inactive | — |
| OLD WEST CHEVROLET DEALERS ADVERTISING ASSOCIATION, INC. | NS010874 | 1997-09-19 | Inactive | — |
| OLD WEST COMPANIES, INC. | DB024656 | 1985-08-26 | Dissolved | RAPID CITY |
| OLD WEST ENTERPRISES, LLC | DL029919 | 2012-11-05 | Dissolved | STURGIS |
| OLD WEST ESCROW CO., INC. | DB029059 | 1990-01-05 | Dissolved | — |
| OLD WEST ESCROW CO., INC. | DB031334 | 1992-01-14 | Active | RAPID CITY |
| OLD WEST FEED COMPANY, INC. | DB021507 | 1982-05-11 | Inactive | — |
| Old West Feed LLC | DL269760 | 2024-03-01 | Dissolved | Sioux Falls |
| OLD WEST GENERAL STORE, LLC | DL011128 | 2006-04-13 | Inactive | — |
| OLD WEST GOLD PROSPECTS, L.L.C. | DL001375 | 1997-09-17 | Active | RAPID CITY |
| OLD WEST HEATING INC. | DB049924 | 2005-06-30 | Dissolved | LEAD |
| OLD WEST HOLDINGS, LLP | DR000123 | 1997-01-15 | Active | RAPID CITY |
| OLD WEST INSURANCE AGENCY, INC. | DB023611 | 1984-07-23 | Inactive | — |
| OLD WEST LIVING HISTORY FOUNDATION, INC. | NS010164 | 1994-09-01 | Inactive | — |
| OLD WEST LOOK, INC. | DB045860 | 2002-09-11 | Dissolved | SIOUX FALLS |
| Old West Oasis LLC | DL273084 | 2024-04-18 | Active | Lead |
| OLD WEST RACING ASSOCIATION | NS007503 | 1983-01-13 | Inactive | — |
| OLD WEST REGION LLC | DL024268 | 2011-04-01 | Dissolved | HURON |
| OLD WEST RESEARCH & CONSULTING, INC. | DB019538 | 1980-03-06 | Inactive | — |
| OLD WEST SHOOTERS SUPPLY, INC. | DB036181 | 1995-08-24 | Inactive | — |
| Old West Tours LLC | DL230042 | 2022-07-05 | Dissolved | Rapid City |
| OLD WEST TRADING POST & PAWN INC. | DB027382 | 1988-05-19 | Inactive | RAPID CITY |
| OLD WEST TRAIL FOUNDATION | FN005193 | 1976-01-09 | Revoked | MINOT |
| OLD WITTEN, LLC | DL015625 | 2008-01-24 | Active | WESSINGTON SPRINGS |
| OLD WORLD BAKING COMPANY, INC. | DB035608 | 1995-03-27 | Inactive | — |
| Old World Industries, LLC | FL153983 | 2018-09-17 | Active | Northbrook |
| OLD WORLDE CAFE AND BOOKERY, LLC | DL009703 | 2005-08-19 | Dissolved | STURGIS |
| OLD YORK RYDAL CORP. | FB009429 | 1984-03-01 | Revoked | BLUE BELL |
| Old-Timey Collectibles & Things LLC | DL327262 | 2026-04-28 | Active | Sioux Falls |
| OLDCASTLE APG SOUTH, INC. | FB248513 | 2023-04-11 | Active | GREENSBORO |
| OLDCASTLE BUILDINGENVELOPE, INC. | FB025112 | 2001-05-09 | Active | DALLAS |
| OLDCASTLE GLASS ENGINEERED PRODUCTS, INC. | FB031893 | 2007-08-08 | Inactive | PLANO |
| OLDCASTLE INFRASTRUCTURE, INC. | FB027912 | 2003-11-17 | Active | Atlanta |
| Oldcastle Lawn & Garden, Inc. | FB247640 | 2023-03-30 | Active | Atlanta |
| Oldcastle Materials SDDA I, Inc. | DB040496 | 1998-09-11 | Active | RAPID CITY |
| Oldcastle Materials WYDA I, Inc. | FB027024 | 2003-02-05 | Inactive | GILLETTE |
| OLDCASTLE SERVICES, INC. | FB036884 | 2013-07-17 | Active | ATLANTA |
| OLDE & CO., INCORPORATED | FB008668 | 1982-11-12 | Revoked | DETROIT |
| OLDE BANK FLORAL 'N MORE, LLC | DL036566 | 2013-12-20 | Inactive | GROTON |
| Olde Bank N' Cafe, LLC | DL147697 | 2018-05-02 | Inactive | GROTON |
| Olde Cabin Farmhouse LLC | DL128244 | 2016-12-01 | Dissolved | Akron |
| OLDE DOC'S HUNTING SERVICE, INC. | FB025462 | 2001-09-04 | Inactive | MADISON |
| OLDE GLORY MARKETING, LIMITED | DB020729 | 1981-06-22 | Dissolved | NEW UNDERWOOD |
| OLDE GRINDE LIMITED PARTNERSHIP | DP000434 | 1994-10-21 | Inactive | — |
| OLDE GRIST MILL, INC. | 19670177D | 1967-12-11 | Dissolved | — |
| OLDE MILL HOSPITALITY, INC. | DB024442 | 1985-05-24 | Suspended | Milbank |
| OLDE SCHOOL BUILDERS, INC. | DB053200 | 2008-01-23 | Active | SIOUX FALLS |
| OLDE SCHOOL LIMITED PARTNERSHIP | DP000369 | 1993-12-16 | Inactive | — |
| Olde South Ice LLC | DL186585 | 2020-08-25 | Dissolved | Yankton |
| OLDE TOWNE SPECIALTIES, INC. | DB037255 | 1996-05-24 | Inactive | — |
| OLDE TOWNE THEATRE COMPANY | NS007407 | 1982-06-29 | Active | WORTHING |
| OLDE, INC. | DB047370 | 2003-09-29 | Inactive | — |
| OldEagle Woodworking LLC | DL317213 | 2026-01-05 | Active | Flandreau |
| OLDENBURG GROUP, INC. | FB028144 | 2004-01-22 | Inactive | GLENDALE |
| OLDENKAMP BEVERAGE, INC. | DB030758 | 1991-06-26 | Inactive | — |
| OLDENKAMP INC. | DB026429 | 1987-06-03 | Inactive | — |
| Oldenkamp, Inc. | DB052909 | 2007-11-13 | Dissolved | WORTHING |
| OLDER ADULTS TECHNOLOGY SERVICES, INC | FB324900 | 2026-04-01 | Active | NEW YORK |
| Oldert Bakery & Farms LLC | DL323315 | 2026-03-13 | Active | Owanka |
| OLDHAM AREA IMPROVEMENT CORPORATION | NS013499 | 2007-08-10 | Active | Arlington |
| OLDHAM BAPTIST CHURCH | CH001629 | 1887-04-07 | Dissolved | OLDHAM |
| OLDHAM CEMETERY ASSOCIATION | NS002050 | 1892-02-10 | Active | VOLGA |
| Oldham Community Center Inc. | NS297964 | 2025-04-14 | Active | OLDHAM |
| OLDHAM COMMUNITY DAYCARE | NS009705 | 1992-09-17 | Inactive | — |
| OLDHAM DEVELOPMENT CORPORATION | NS005201 | 1972-11-09 | Inactive | — |
| OLDHAM FARMERS ELEVATOR | CO000066 | 1939-03-11 | Inactive | — |
| OLDHAM FOOD PANTRY | NS014814 | 2012-04-11 | Active | Oldham |
| OLDHAM LIBRARY AND HISTORICAL ASSOCIATION | NS006000 | 1976-05-07 | Active | RAMONA |
| OLDHAM LUTHERAN CHURCH | CH001634 | 1884-06-04 | Active | OLDHAM |
| OLDHAM POST NO. 158 OF THE AMERICAN LEGION | NS003070 | 1923-01-22 | Dissolved | ARLINGTON |
| Oldham Properties LLC | DL172034 | 2019-10-22 | Dissolved | Rapid City |
| Oldham Properties, LLC | DL248997 | 2023-04-18 | Active | OLDHAM |
| OLDHAM SERVICES, INC. | DB024081 | 1985-01-08 | Dissolved | OLDHAM |
| Oldham Transport Inc | DB182102 | 2020-05-26 | Active | Rapid City |
| OLDHAM, SD | CI000096 | 1917-05-31 | Active | — |
| OLDIES, INC. | DB026190 | 1987-03-10 | Inactive | — |
| OLDS HALL GOOD SAMARITAN HOUSING GP, INC. | NS140106 | 2017-11-22 | Dissolved | Sioux Falls |
| OLDS HALL GOOD SAMARITAN HOUSING, LIMITED PARTNERSHIP | DP140845 | 2017-12-11 | Inactive | SIOUX FALLS |
| OLDS, LLC | DL026395 | 2011-12-02 | Active | Littleton |
| OLDTIMER'S SHOP | 19680002ND | 1968-12-27 | Active | — |
| Ole 2021 LLC | DL194032 | 2021-01-04 | Active | Fargo |
| OLE AND LENA GROUP LLC | DL026300 | 2011-11-21 | Dissolved | LEAD |
| Ole Enterprises, LLC | DL045891 | 2015-11-18 | Active | Fargo |
| OLE GREY BARN, L.L.C. | DL151023 | 2018-07-13 | Active | Deadwood |
| OLE HOLDINGS LLC | DL044560 | 2015-07-31 | Inactive | FARGO |
| OLE PETERSON RANCH, INC. | DF022316 | 1983-04-18 | Inactive | — |
| Ole Real Estate 2021 LLC | DL194034 | 2021-01-04 | Active | Fargo |
| OLE REAL ESTATE HOLDINGS LLC | DL134073 | 2017-06-08 | Active | Fargo |
| Ole Red's Eatery, LLC | DL169104 | 2019-08-21 | Dissolved | Letcher |
| OLE RENTALS II LLC | DL044561 | 2015-07-31 | Active | FARGO |
| Ole Rentals LLC | DL041356 | 2014-12-11 | Active | FARGO |
| Ole XII LLC | DL297482 | 2025-04-08 | Active | Fargo |
| Ole XII RE LLC | DL297488 | 2025-04-08 | Active | Fargo |
| OLE, LLC | DL010530 | 2006-01-11 | Active | SIOUX FALLS |
| Oleander Cross LLC | DL141493 | 2017-12-26 | Active | Sioux Falls |
| Oleander Technologies LLC | DL326177 | 2026-04-15 | Active | Sioux Falls |
| Oleo Acres LLC | DL314295 | 2025-11-21 | Active | Yankton |
| OLEO LAND, LLC | DL008920 | 2005-03-30 | Active | MT VERNON |
| olepjoien, LLC | DL239440 | 2022-11-30 | Active | Sioux Falls |
| Oler Property Management, LLC | DL230963 | 2022-07-20 | Active | Rapid City |
| OLERUD ENTERPRISES, LLC | DL019997 | 2009-10-20 | Active | CLEAR LAKE |
| Olerud Estates, LLC | DL266325 | 2024-01-12 | Active | Watertown |
| OLERUD TRUCKING, LLC | DL279636 | 2024-07-25 | Active | HURON |
| Olesen Farms, LLC | DL175254 | 2020-01-03 | Active | Lawton |
| OLESEN FLYING SERVICE, INC. | DB019446 | 1980-01-30 | Inactive | — |
| OLESENS FLYWAY, LLC | DL030444 | 2012-12-12 | Active | HURLEY |
| OLESON FARMS, LLC | DL140705 | 2017-12-07 | Active | BRANDON |
| Oleson Machining, LLC | DL219961 | 2022-02-04 | Active | WATERTOWN |
| Olet Landscape Design Ltd. | DL301691 | 2025-06-03 | Active | Hill City |
| Oletzke Custom Ag LLC | DL307887 | 2025-08-27 | Active | Sisseton |
| OLETZKE HAY GRINDING LLC | DL310581 | 2025-10-01 | Active | GRANT TOWNSHIP |
| Olfa, LLC | DL205458 | 2021-06-28 | Active | Sioux Falls |
| OLGA ALTERATION LLC | DL046161 | 2015-12-10 | Active | SIOUX FALLS |
| OLGA BROUWER, LLC | DL257642 | 2023-08-29 | Active | Sioux Falls |
| OLGOONIK MANAGEMENT SERVICES, LLC | FL167822 | 2019-07-25 | Active | Anchorage |
| OLHA SD LIHTC #1, Limited Partnership | DP267150 | 2024-01-25 | Active | PINE RIDGE |
| OLHA SD LIHTC #2, Limited Partnership | DP323811 | 2026-03-19 | Active | PINE RIDGE |
| Olhausen Trucking LLC | DL263021 | 2023-11-21 | Active | Sioux Falls |
| Olhausen, L.L.C. | DL141506 | 2017-12-26 | Active | Dakota Dunes |
| OLIGMILLER INVESTMENTS, L.L.C. | DL001430 | 1997-10-27 | Active | RAPID CITY |
| Oligmueller Bros, LLP | DR001774 | 2016-06-07 | Inactive | REDFIELD |
| OLIGMUELLER CONSTRUCTION, INC. | DB039817 | 1998-03-25 | Dissolved | Miller |
| OLIGMUELLER, INC. | DB035650 | 1995-04-03 | Suspended | RAPID CITY |
| OLIN CORPORATION | FB000781 | 1952-09-30 | Active | CLAYTON |
| OLINA CITRUS PRODUCTS, LLC | FL043641 | 2015-07-16 | Inactive | WILMINGTON |
| Olinda Analytics, LLC | DL266606 | 2024-01-17 | Active | Sioux Falls |
| Olinda Property Solutions LLC | DL225281 | 2022-04-19 | Active | — |
| Olindustries LLC | DL310492 | 2025-09-30 | Active | Hartford |
| OLINGER CARPET SERVICE INC. | DB049731 | 2005-05-17 | Active | EMERY |
| Olinger Electric, LLC | DL176938 | 2020-02-06 | Active | Emery |
| OLINGER FARMS, LLP | DR193645 | 2021-01-01 | Dissolved | MADISON |
| OLINGER TRUCKING LLC | DL014785 | 2007-10-03 | Active | PLANKINTON |
| Olinger, Lovald, McCahren & Van Camp, P.C. | DB014947 | 1978-01-03 | Active | PIERRE |
| OLINGER, LTD. | DB019463 | 1980-02-05 | Dissolved | Sioux Falls |
| OLIPHANT FINANCIAL GROUP, LLC | FL005012 | 2010-03-04 | Revoked | sarasota |
| Oliphant Financial, LLC | FL180221 | 2020-04-20 | Suspended | AUSTIN |
| OLIPHANT FINANCIAL, LLC | FL002938 | 2006-05-15 | Revoked | SARASOTA |
| Oliphant USA, LLC | FL166385 | 2019-06-21 | Active | AUSTIN |
| OLIVA CLEANING SERVICES LLC | DL262257 | 2023-11-09 | Inactive | SIOUX FALLS |
| Oliva Tree Service LLC | DL176389 | 2020-01-27 | Active | Piedmont |
| Olivares Framing, LLC | DL197712 | 2021-03-02 | Dissolved | Sioux Falls |
| Olive & Opal Nail Studio LLC | DL247010 | 2023-03-21 | Active | Rapid City |
| OLIVE AI, INC. | FB207968 | 2021-08-09 | Revoked | Columbus |
| Olive and Oakes LLC | DL129306 | 2017-01-03 | Dissolved | Sioux Falls |
| Olive and Thyme LLC | DL250431 | 2023-05-09 | Active | Chamberlain |
| Olive Branch Home Services, LLC | DL330638 | 2026-06-08 | Active | Pierre |
| OLIVE BRANCH LODGE #47 A.F. AND A.M. | NS004312 | 1885-07-11 | Active | STURGIS |
| OLIVE BRANCH MENNONITE MISSIONS | FN011283 | 2011-12-07 | Active | DENVER |
| OLIVE BRANCH WELLNESS, L.L.C. | DL016726 | 2008-06-16 | Active | BRANDON |
| OLIVE BRANCHES, INC. | DB057684 | 2013-04-01 | Active | Rapid City |
| OLIVE DESTINATION, INC. | DB056266 | 2011-07-28 | Active | SIOUX FALLS |
| OLIVE DRIVE PATIO HOMES, LLC | DL021861 | 2010-07-01 | Inactive | ABERDEEN |
| Olive Drive Rentals, LLC | DL041515 | 2014-12-16 | Active | ABERDEEN |
| Olive Drive, LLC | DL196049 | 2021-02-03 | Active | Mina |
| Olive Enterprises, LLC | DL300911 | 2025-05-22 | Suspended | Groton |
| OLIVE EQUITIES MANAGEMENT INC. | DB265013 | 2023-12-22 | Active | Watertown |
| Olive Grove Apartments, LLC | DL270519 | 2024-03-12 | Active | Sioux Falls |
| OLIVE GROVE GOLF COURSE, INC. | NS008831 | 1988-10-17 | Active | GROTON |
| OLIVE HOLDINGS, LLP | DR000212 | 1997-10-28 | Dissolved | ABERDEEN |
| Olive House, LLC | DL309642 | 2025-09-19 | Active | Elkton |
| Olive Instinct LLC | DL237363 | 2022-10-25 | Active | Sioux Falls |
| Olive KSE Dakota DE LLC | FL309053 | 2025-09-11 | Active | Tulsa |
| Olive Laurel Art LLC | DL315934 | 2025-12-17 | Active | Aberdeen |
| Olive LLC | DL289673 | 2024-12-26 | Active | Brookings |
| Olive LLC | DL199268 | 2021-03-23 | Dissolved | Brookings |
| Olive Master Tenant Dakota DE LLC | FL310310 | 2025-09-29 | Active | Tulsa |
| OLIVE OIL L.L.C. | FL000027 | 1994-10-24 | Revoked | WICHITA |
| OLIVE PRESBYTERIAN CHURCH, PLATTE, SOUTH DAKOTA | CH000110 | 1959-11-30 | Active | PLATTE |
| Olive Soul LLC | DL208951 | 2021-08-24 | Active | SIOUX FALLS |
| Olive Tree Clothing & Co. LLC | DL205991 | 2021-07-08 | Dissolved | Hartford |
| Olive Tree LLC | DL257662 | 2023-08-29 | Active | New York |
| OLIVE TREE PRAIRIE HOLDING LLC | DL274867 | 2024-05-14 | Active | SIOUX FALLS |
| Olive&Grace Floral Co. L.L.C. | DL160808 | 2019-02-25 | Active | Sioux Falls |