| OAHE CHILD DEVELOPMENT CENTER, INC. | NS004995 | 1971-10-05 | Active | PIERRE |
| OAHE CHIROPRACTIC AND WELLNESS, P.C. | DB060584 | 2015-12-29 | Active | PIERRE |
| OAHE COMPUTER SOLUTIONS, LLC | DL045241 | 2015-09-23 | Dissolved | MOBRIDGE |
| OAHE CONCRETE, LLC | DL190264 | 2020-10-28 | Dissolved | Onida |
| OAHE CONSERVANCY SUB-DISTRICT | DM009325 | 1960-12-20 | Active | — |
| Oahe Contracting LLC | DL206113 | 2021-07-08 | Active | Fort Pierre |
| OAHE DAIRY HERD IMPROVEMENT ASSOCIATION | CO000672 | 1971-04-07 | Inactive | — |
| Oahe Dakota Contractors, LLC | DL189072 | 2020-10-08 | Dissolved | Mobridge |
| Oahe Data LLC | DL326347 | 2026-04-17 | Active | Eagle Butte |
| OAHE DAYS ARTS FESTIVAL | NS012997 | 2005-11-23 | Dissolved | PIERRE |
| Oahe Days Music and Arts Festival | NS250685 | 2023-05-12 | Active | PIERRE |
| OAHE DIAGNOSTIC IMAGING, LLP | DR000163 | 1997-07-01 | Inactive | — |
| OAHE DIVER'S ASSOCIATION | NS006201 | 1977-03-28 | Inactive | — |
| OAHE ELECTRIC COOPERATIVE, INC. | CO000122 | 1946-04-02 | Active | BLUNT |
| OAHE ELECTRIC COOPERATIVE, INC. | PU000122 | 1946-04-02 | Active | — |
| OAHE FARMING, INC. | DF026143 | 1987-02-19 | Dissolved | — |
| OAHE FC | NS013518 | 2007-09-11 | Active | Pierre |
| OAHE FINANCIAL COUNSELORS, INC. | DB022655 | 1983-08-17 | Dissolved | Aberdeen |
| OAHE FLYING, INC. | NS005573 | 1974-05-29 | Inactive | — |
| OAHE FOUNDATION | NS007850 | 1984-04-30 | Active | PIERRE |
| OAHE FUR FARM, INC. | DB026350 | 1987-05-04 | Inactive | — |
| OAHE GLASS, Inc. | DB060319 | 2015-09-01 | Dissolved | FT PIERRE |
| Oahe Gold Ventures, Inc. | DB191440 | 2020-11-18 | Active | SELBY |
| OAHE GRAIN CORPORATION | DB006745 | 1954-09-25 | Active | Onida |
| Oahe Grounds Co. LLC | DL324821 | 2026-03-31 | Active | Pierre |
| OAHE GUIDE ASSOCIATES, INC. | DB021100 | 1981-11-09 | Inactive | — |
| OAHE GUIDE SERVICES, LLC | DL012936 | 2007-01-11 | Active | AGAR |
| OAHE HABITAT FOR HUMANITY, INC. | NS010029 | 1994-02-07 | Dissolved | PIERRE |
| OAHE HEALTH MANAGEMENT LLC | DL006576 | 2003-12-01 | Active | PIERRE |
| OAHE HOCKEY ASSOCIATION, INC. | NS010319 | 1995-05-02 | Active | FORT PIERRE |
| OAHE HOME BUILDERS ASSOCIATION | NS049876 | 2016-01-22 | Active | PIERRE |
| OAHE HOUSEBOAT RENTALS, INC. | DB022292 | 1983-04-11 | Inactive | — |
| OAHE IMPLEMENT COMPANY | DB003177 | 1963-04-23 | Dissolved | — |
| OAHE INVESTIGATIONS LLC | DL014027 | 2007-06-01 | Inactive | — |
| OAHE INVESTMENT COMPANY | DB011934 | 1973-10-30 | Dissolved | — |
| OAHE INVESTMENTS I LIMITED PARTNERSHIP | DP000354 | 1993-10-06 | Inactive | — |
| OAHE INVESTMENTS II LIMITED PARTNERSHIP | DP000380 | 1994-01-24 | Inactive | — |
| Oahe Investments, LLC. | DL257387 | 2023-08-24 | Active | Pierre |
| Oahe Jiu Jitsu LLC | DL264761 | 2023-12-19 | Active | Pierre |
| OAHE LAND & CATTLE CO. | DF011240 | 1972-08-24 | Inactive | — |
| OAHE LAND DEVELOPMENT, INC. | DB026783 | 1987-10-08 | Dissolved | FT PIERRE |
| OAHE LANDOWNERS ASSOCIATION | NS012297 | 2003-05-09 | Active | EAGLE BUTTE |
| Oahe Landscapes Hills Division, LLC | DL288667 | 2024-12-11 | Active | Black Hawk |
| Oahe Landscapes, LLC | DL192200 | 2021-01-02 | Active | Mobridge |
| Oahe Lawns LLC | DL330030 | 2026-05-30 | Active | Pierre |
| OAHE LIVESTOCK (BUSINESS TRUST) | DB026705 | 1987-09-14 | Dissolved | — |
| OAHE LODGE, INC. | DB028313 | 1989-04-20 | Dissolved | PIERRE |
| OAHE MANOR, INCORPORATED | NS000720 | 1964-07-01 | Inactive | — |
| OAHE MARINA AND RESORT, INC. | DB026501 | 1987-06-26 | Dissolved | — |
| OAHE MARINA AND RESORT, L.L.C. | DL008928 | 2005-03-30 | Dissolved | FORT PIERRE |
| OAHE MARINE DETACHMENT #851 | NS010021 | 1994-01-26 | Dissolved | PIERRE |
| OAHE MEDICAL CLINIC, INC. | NS008508 | 1987-04-01 | Inactive | — |
| OAHE ONLINE VENTURES, INC. | DB055634 | 2010-10-06 | Dissolved | FORT PIERRE |
| Oahe Outboards LLC | DL276207 | 2024-06-03 | Active | Mobridge |
| OAHE OUTFITTERS LIMITED | DB014276 | 1977-04-11 | Dissolved | PIERRE |
| Oahe Pawn, L.L.C. | DL037593 | 2014-02-25 | Active | PIERRE |
| Oahe Photography Tours, LLC | DL325856 | 2026-04-12 | Active | Pierre |
| OAHE PLAINS SYSTEMS CORPORATION | NS006257 | 1977-06-08 | Dissolved | PIERRE |
| OAHE PLUMBING & HEATING, INC. | DB012267 | 1974-04-23 | Dissolved | — |
| Oahe Prairie Products LLC | DL327558 | 2026-04-30 | Active | Pierre |
| Oahe Properties, L.L.C. | DL036761 | 2014-01-03 | Active | PIERRE |
| OAHE PUBLISHING CORPORATION | DB014853 | 1977-12-05 | Active | CLE ELUM |
| Oahe Racers Association, Inc. | NS132691 | 2017-04-19 | Dissolved | PIERRE |
| Oahe Real Estate Group, LLC | DL299178 | 2025-04-30 | Active | Mobridge |
| Oahe Rentals LLC | DL300622 | 2025-05-19 | Active | Mobridge |
| Oahe Rentals LLC | DL224237 | 2022-04-05 | Inactive | Pierre |
| OAHE RIDING CLUB | NS002567 | 1954-04-19 | Active | Fort Pierre |
| OAHE SALES, LLC | DL024797 | 2011-05-26 | Dissolved | MOBRIDGE |
| OAHE SERVICE CORP. | DB012460 | 1974-08-20 | Dissolved | — |
| Oahe Services LLC | DL269159 | 2024-02-23 | Dissolved | Mound City |
| Oahe Shipping LLC | DL259244 | 2023-09-21 | Dissolved | Pierre |
| OAHE SOLAR LLC | FL225554 | 2022-04-22 | Inactive | PHILADELPHIA |
| OAHE SPEEDWAY, L.L.C. | DL006294 | 2003-09-22 | Dissolved | FORT PIERRE |
| OAHE SPORTMEN'S CLUB | NS001520 | 1957-04-23 | Dissolved | MOBRIDGE |
| Oahe Spray Foam and Insulation LLC | DL297368 | 2025-04-07 | Active | Pierre |
| Oahe Staffing, Prof. LLC | DL254249 | 2023-07-07 | Active | Pierre |
| Oahe Steel LLC | DL302532 | 2025-06-15 | Active | Fort Pierre |
| Oahe Storage, LLC | DL134898 | 2017-07-10 | Active | FT. PIERRE |
| Oahe Studios, LLC | DL173605 | 2019-11-27 | Dissolved | Pierre |
| Oahe Submission Grappling, LLC | DL229262 | 2022-06-21 | Dissolved | Fort Pierre |
| Oahe Tackle LLC | DL262033 | 2023-11-06 | Active | Pierre |
| OAHE TAILRACE, LLC | DL021526 | 2010-05-18 | Dissolved | PIERRE |
| Oahe Tech LLC | DL167891 | 2019-07-26 | Dissolved | Gettysburg |
| OAHE TRADING AND INVESTMENT COMPANY LLC | DL027677 | 2012-03-27 | Active | PIERRE |
| OAHE TRAIL DEVELOPMENT, INC. | DB037666 | 1996-09-18 | Dissolved | PIERRE |
| OAHE TRAILS RESORT, L.L.C. | DL001736 | 1998-06-26 | Active | Pierre, SD |
| Oahe Trails Subdivision Road District | DM009864 | 2015-07-10 | Active | — |
| OAHE UNIT #18 DISABLED AMERICANS AUXILIARY | NS010563 | 1996-05-06 | Suspended | PIERRE |
| OAHE UNITED PRESBYTERIAN CHURCH IN THE USA OF PIERRE | CH000304 | 1965-01-29 | Active | PIERRE |
| OAHE UPLAND BIRD HUNTING, LTD. | DB025759 | 1986-10-10 | Inactive | — |
| OAHE VALLEY AG VENTURES, LLC | DL012319 | 2006-10-18 | Active | PIERRE |
| OAHE VENTURES, INC. | DB030702 | 1991-05-29 | Dissolved | — |
| OAHE VENTURES, LTD. | DB033362 | 1993-08-30 | Dissolved | MCINTOSH |
| OAHE VETERINARY CLINIC PROFESSIONAL ASSOCIATION | DB011820 | 1973-08-08 | Dissolved | FT PIERRE |
| Oahe Veterinary Clinic, LLC | DL046505 | 2015-12-31 | Active | FORT PIERRE |
| OAHE VETERINARY HOSPITAL AND CLINIC, P.A. | DB011885 | 1973-09-26 | Inactive | — |
| OAHE VETERINARY HOSPITAL, P.C. | DB031399 | 1992-02-04 | Active | MOBRIDGE |
| OAHE VETS INCORPORATED | NS010560 | 1996-05-03 | Inactive | — |
| OAHE VIEW, LLC | DL012641 | 2006-12-07 | Active | HERREID |
| Oahe Vintage LLC | DL199072 | 2021-03-21 | Dissolved | PIERRE |
| Oahe Waters Acupuncture & Healing | DL152497 | 2018-08-14 | Active | Pierre |
| OAHE WILDLIFE CENTER | NS009919 | 1993-08-13 | Inactive | — |
| OAHE WINDSURFING, INC. | DB025572 | 1986-07-18 | Inactive | — |
| OAHE WINGS & WALLEYES, INC. | DB052986 | 2007-12-10 | Active | Akaska |
| Oahe Zap Baseball LLC | DL291589 | 2025-01-22 | Active | Pierre |
| OAHE, INC. | NS007405 | 1982-06-28 | Dissolved | PIERRE |
| OAHE, INC. LIMITED PARTNERSHIP | DP000153 | 1989-12-29 | Inactive | PIERRE |
| Oahes Corner Market LLC | DL203161 | 2021-05-18 | Dissolved | Mobridge |
| Oak & Arrow Consulting, LLC | DL234198 | 2022-09-07 | Active | Worthing |
| Oak & Arrow, LLC | DL180773 | 2020-04-30 | Active | Worthing |
| Oak & Iron Tattoo and Piercing, LLC | DL162641 | 2019-05-01 | Dissolved | Rapid City |
| Oak & Key Realty LLC | DL171464 | 2019-10-11 | Active | Rapid City |
| Oak & Ledger, LLC | DL328763 | 2026-05-14 | Active | Sioux Falls |
| Oak & Olive, LLC | DL215295 | 2021-11-30 | Active | Sioux Falls |
| Oak & Willow Investments, LLC | DL308934 | 2025-09-10 | Active | Watertown |
| Oak Air Investments LLC | DL209921 | 2021-09-10 | Active | Omaha |
| Oak and Blossoms LLC | DL312534 | 2025-10-29 | Active | Mitchell |
| OAK AVE LLC | DL199034 | 2021-03-19 | Active | RAPID CITY |
| Oak Bridge Development Partners, L.L.C. | DL254331 | 2023-07-10 | Active | Plano |
| Oak Brook Centre, LLC | DL045086 | 2015-09-11 | Active | SIOUX FALLS |
| OAK CENTRE, L.L.C. | DL004730 | 2002-05-06 | Dissolved | — |
| Oak Cottage, LLC | DL208472 | 2021-08-17 | Active | Hollywood |
| OAK CREEK CDC | NS330442 | 2026-06-04 | Active | MCLAUGHLIN |
| Oak Creek Construction LLC | DL294149 | 2025-02-27 | Active | Montrose |
| OAK CREEK FAMILY LIMITED PARTNERSHIP | FP000963 | 2016-10-31 | Active | BONSALL |
| Oak Creek Forestry, LLC | FL247929 | 2023-04-03 | Active | Sundance |
| OAK CREEK HOLDINGS, LLC | DL048728 | 2016-06-02 | Dissolved | ABERDEEN |
| Oak Creek Oasis, LLC | DL295679 | 2025-03-17 | Active | Sedona |
| Oak Creek Painting and Prefinish LLC | DL237469 | 2022-10-27 | Active | MONTROSE |
| OAK CREEK PROPERTIES, L.L.C. | DL011436 | 2006-05-30 | Dissolved | BELLE FOURCHE |
| OAK CREEK RANCH LLC | DL004048 | 2001-09-07 | Dissolved | BURKE |
| Oak Creek Recovery Inc. | DB060842 | 2016-04-26 | Dissolved | BROOKINGS |
| OAK DRAW, INC. | DB046603 | 2003-03-17 | Inactive | — |
| OAK GLEN, INC. | NS011366 | 1999-10-27 | Inactive | — |
| OAK GROVE CEMETERY ASSOCIATION | 19040003N | 1904-08-10 | Active | — |
| OAK GROVE CEMETERY ASSOCIATION, INC. | 19440006N | 1944-06-06 | Active | — |
| Oak Grove Conservation, LLC | DL228154 | 2022-06-02 | Active | Brookings |
| Oak Grove House, LLC | DL246364 | 2023-03-13 | Active | Lexington |
| OAK GROVE SCHOOL | 19410018ND | 1941-02-04 | Active | — |
| OAK GULCH PHEASANT HUNTS, LLC | DL014781 | 2007-10-02 | Active | WATERTOWN |
| Oak Haven Industries Corp. | DB172135 | 2019-10-24 | Dissolved | Sioux Falls |
| OAK HILL APARTMENTS LLC | DL298362 | 2025-04-21 | Active | SIOUX FALLS |
| OAK HILL CEMETARY ASSOCIATION | 19020001N | 1902-06-05 | Active | — |
| OAK HILL CEMETERY ASSOCIATION | 19580013N | 1958-11-20 | Active | — |
| OAK HILL CEMETERY IMPROVEMENT ASSOCIATION | 19490014N | 1949-12-07 | Active | — |
| OAK HILL CONSULTING, INC. | FB019978 | 1997-04-09 | Revoked | BURNSVILLE |
| Oak Hill Consulting, Inc. | FB170973 | 2019-10-01 | Active | Jordan |
| OAK HILL HOLDINGS LLC | DL299219 | 2025-05-01 | Active | Watertown |
| Oak Hill Transport, Inc. | DB238168 | 2022-11-08 | Dissolved | Sioux Falls |
| Oak Hills Associates, LLC | DL314832 | 2025-12-02 | Active | Sioux Falls |
| OAK HILLS BAPTIST CHURCH | CH003276 | 1989-12-13 | Active | SIOUX FALLS |
| OAK HILLS DEVELOPMENT, L.L.C. | DL003910 | 2001-07-12 | Inactive | — |
| OAK HILLS LANDOWNERS, INC. | NS008363 | 1986-08-28 | Inactive | — |
| OAK HILLS LANDOWNERS, INC. | NS012302 | 2003-05-16 | Inactive | — |
| Oak Hills Tech LLC | DL315634 | 2025-12-12 | Active | Sioux Falls |
| OAK HILLS, INC. | DB006744 | 1957-07-31 | Dissolved | — |
| Oak Hills, LLC | DL174780 | 2019-12-23 | Active | SIOUX FALLS |
| Oak Hills/Rasmussen Road District | RD132760 | 2017-04-21 | Active | YANKTON |
| Oak Hollow Custom Woodworks LLC | DL132612 | 2017-04-17 | Active | Rapid City |
| OAK HOLLOW LLC | DL007896 | 2004-09-13 | Dissolved | DELL RAPIDS |
| Oak Hollow, LLC | DL048449 | 2016-05-11 | Active | Prescott |
| Oak Imaging, LLC | FL252459 | 2023-06-08 | Active | Cottage Grove |
| Oak Interiors LLC | DL178030 | 2020-03-01 | Active | Rapid City |
| Oak Ivory LLC | DL311234 | 2025-10-10 | Active | Jefferson Township |
| Oak Lake Auto, LLC | DL319729 | 2026-02-02 | Active | White |
| OAK LAKE FILM, LLC | DL034790 | 2013-08-20 | Inactive | BROOKINGS |
| OAK LAKE WRITERS' SOCIETY | NS010969 | 1998-02-04 | Dissolved | PEEVER |
| OAK LANE HUTTERIAN BRETHREN, INC. | NS008503 | 1987-03-26 | Active | ALEXANDRIA |
| Oak Lane Interiors, LLC | DL203821 | 2021-05-28 | Inactive | Aberdeen |
| Oak Lane Meats, LLC | DL309913 | 2025-09-23 | Active | Alexandria |
| OAK LEASING, INC. | DB051850 | 2006-12-26 | Dissolved | Sioux Falls |
| OAK MEADOWS LIMITED PARTNERSHIP | DP001965 | 2008-12-31 | Active | BELLE FOURCHE |
| OAK MOUNTAIN COUNTRY ESTATES OWNERS ASSOCIATION | NS013266 | 2006-10-26 | Active | STURGIS |
| OAK MOUNTAIN COUNTRY ROAD DISTRICT | DM009429 | 1997-08-27 | Active | DEADWOOD |
| OAK PARK ENTERPRISES LTD. | DB026167 | 1987-03-02 | Inactive | — |
| OAK PARK ESTATES, L.L.C. | DL006763 | 2004-01-06 | Dissolved | BRANDON |
| Oak Park Road District | DM009880 | 2016-05-23 | Active | — |
| OAK PULLETS, INC. | DB005542 | 1966-09-22 | Inactive | — |
| Oak Ridge Consulting, L.L.C. | DL154889 | 2018-10-09 | Active | STURGIS |
| Oak Ridge Estate LLC | DL206793 | 2021-07-20 | Active | Sioux Falls |
| OAK RIDGE ESTATES HOMEOWNERS ASSOCIATION | NS010954 | 1998-01-14 | Active | STURGIS |
| Oak Ridge Exteriors, LLC | FL185550 | 2020-08-05 | Revoked | Rapid City |
| OAK RIDGE FARMS, INC. | DF016557 | 1979-04-03 | Inactive | — |
| OAK RIDGE RANCH, LLC | DL004963 | 2002-08-05 | Dissolved | STURGIS |
| OAK RIDGE TOWNHOME ASSOCIATION | NS009398 | 1991-05-20 | Active | SIOUX FALLS |
| OAK RIVER APARTMENTS LIMITED PARTNERSHIP | DP255123 | 2023-07-20 | Active | SIOUX FALLS |
| Oak River Deliveries Inc. | DB216003 | 2021-12-08 | Active | Baltic |
| Oak River LLC | DL254393 | 2023-07-11 | Dissolved | Sioux Falls |
| Oak Roasters LLC | DL049990 | 2016-09-19 | Active | RAPID CITY |
| OAK SERVICES II LLC | FL143533 | 2018-02-05 | Active | NORCROSS |
| OAK SERVICES, INC. | FB030243 | 2005-12-27 | Inactive | LOMBARD |
| OAK STREET FUNDING LLC | FL002066 | 2004-08-17 | Active | Indianapolis |
| OAK STREET INVESTMENT GRADE NET LEASE FUND SERIES 2020-1, LLC | FL189572 | 2020-10-16 | Active | CHICAGO |
| OAK STREET INVESTMENT GRADE NET LEASE FUND SERIES 2021-1, LLC | FL194291 | 2021-01-07 | Active | Chicago |
| OAK STREET INVESTMENTS, LLC | DL035362 | 2013-10-07 | Active | SIOUX FALLS |
| OAK SYSTEMS INTERNATIONAL, INC. | FB026713 | 2002-10-25 | Inactive | SUNNYVALE |
| OAK TRAILS IMPROVEMENT ASSOCIATION | NS005384 | 1973-08-22 | Active | Sioux Falls |
| OAK TRAILS, INC. | DB000505 | 1959-04-02 | Inactive | — |
| OAK TREE DEVELOPMENT, LLC | DL035204 | 2013-09-23 | Active | Rapid City |
| OAK TREE ENERGY, LLC | FL006147 | 2012-02-21 | Suspended | Valhalla |