| BLACK HILLS NANOSYSTEMS, CORPORATION | FB032825 | 2008-07-25 | Inactive | OAKLAND |
| BLACK HILLS NATIONAL ART, INC. | NS007959 | 1984-10-10 | Inactive | — |
| Black Hills National Security, LLC | DL133101 | 2017-05-03 | Dissolved | Spearfish |
| BLACK HILLS NATURAL FOODS, INC. | DB028271 | 1989-04-07 | Inactive | — |
| Black Hills Natural Paths, LLC | DL249561 | 2023-07-01 | Active | Rapid city |
| BLACK HILLS NATURAL SPRING WATER, INC. | DB025645 | 1986-08-19 | Inactive | — |
| BLACK HILLS NEUROLOGY, LLP | DR000481 | 2000-06-29 | Inactive | RAPID CITY |
| Black Hills Neuropsychology and Behavioral Health, LLC | DL036019 | 2013-12-06 | Dissolved | SPEARFISH |
| Black Hills Neuropsychology LLC | DL209799 | 2021-09-08 | Active | Rapid City |
| BLACK HILLS NEUROSURGERY INVESTMENTS, LLC | DL022775 | 2010-11-02 | Inactive | RAPID CITY |
| BLACK HILLS NEW MEDIA, LLC | DL011527 | 2006-06-12 | Dissolved | SPEARFISH |
| Black Hills Ninjas, LLC | DL160692 | 2019-02-21 | Dissolved | Rapid City |
| Black Hills Nomads LLC | DL223060 | 2022-03-18 | Dissolved | Rapid City |
| BLACK HILLS NON-REGULATED HOLDINGS, LLC | DL016700 | 2008-06-11 | Active | RAPID CITY |
| Black Hills Nordic Ski Club | NS158028 | 2018-12-26 | Dissolved | SPEARFISH |
| BLACK HILLS NORDIC SKI CLUB | NS013352 | 2007-02-28 | Dissolved | SPEARFISH |
| BLACK HILLS NOVELTY, LLC | DL026194 | 2011-11-10 | Active | DEADWOOD |
| BLACK HILLS NURSERY INC. | DB047582 | 2003-12-02 | Active | Rapid City |
| BLACK HILLS NUTRALIX LLC | DL025220 | 2011-07-15 | Dissolved | RAPID CITY |
| Black Hills Nutrition, LLC | DL049446 | 2016-08-01 | Dissolved | Rapid City |
| BLACK HILLS O & P, INC. | DB032164 | 1992-09-23 | Dissolved | RAPID CITY |
| Black Hills Obstetrics & Gynecology, LLC | DL181303 | 2020-05-11 | Inactive | RAPID CITY |
| BLACK HILLS OBSTETRICS AND GYNECOLOGY LLP | DR000461 | 2000-03-27 | Suspended | RAPID CITY |
| BLACK HILLS OFF-ROAD RENTALS, LLC | DL049914 | 2016-09-12 | Active | Deadwood |
| BLACK HILLS OFF-ROAD RENTALS, LLC | DL023039 | 2010-12-02 | Inactive | DEADWOOD |
| BLACK HILLS OFF-ROAD, INC. | DB049450 | 2005-03-21 | Dissolved | RAPID CITY |
| Black Hills Offgrid Adventures, LLC | DL219202 | 2022-01-25 | Dissolved | Rapid City |
| BLACK HILLS OFFICE & COMPUTER SUPPLY, INC | DB185703 | 2020-08-07 | Dissolved | Hermosa |
| BLACK HILLS OFFICE & COMPUTER SUPPLY, INC. | DB035919 | 1995-06-12 | Inactive | — |
| BLACK HILLS OFFICE & COMPUTER SUPPLY, INC. | DB034963 | 1994-11-04 | Dissolved | — |
| BLACK HILLS OFFICE & GAMING SUPPLY, INC. | DB034851 | 1994-09-28 | Inactive | — |
| BLACK HILLS OFFICE SUPPLY, INC. | DB035918 | 1995-06-12 | Dissolved | — |
| BLACK HILLS OIL & TITLE COMPANY | DB020171 | 1980-11-14 | Inactive | — |
| BLACK HILLS OIL AND GAS COMPANY | FB007790 | 1981-06-22 | Revoked | SAN FRANCISCO |
| Black HIlls Oil Hauling, Inc. | DB059262 | 2014-07-17 | Dissolved | SPEARFISH |
| Black Hills on Ninth, LLC | DL215545 | 2021-12-02 | Active | Hollywood |
| Black Hills Oncology Yoga, LLC | DL236844 | 2022-10-17 | Dissolved | Rapid CIty |
| BLACK HILLS OPEN HORSE SHOWS, INC. | NS013869 | 2008-10-31 | Active | BELLE FOURCHE |
| Black Hills Operations Group, LLC | DL270036 | 2024-03-05 | Inactive | Cedar City |
| BLACK HILLS OPRYLAND, INC. | DB024161 | 1985-02-04 | Inactive | — |
| BLACK HILLS OPTICAL, LLC | DL329913 | 1997-10-02 | Active | BELLE FOURCHE |
| BLACK HILLS OPTICAL, LLP | DR000197 | 1997-10-02 | Active | BELLE FOURCHE |
| BLACK HILLS OPTOMETRY, LLC | DL022075 | 2010-08-02 | Inactive | RAPID CITY |
| BLACK HILLS ORAL & MAXILLOFACIAL SURGERY, P.C. | DB014822 | 1977-11-21 | Active | RAPID CITY |
| Black Hills Oral Surgery & Dental Implant Center, LLP | DR333970 | 2026-07-17 | Active | RAPID CITY |
| BLACK HILLS ORCHID SOCIETY | NS012708 | 2004-12-17 | Dissolved | RAPID CITY |
| BLACK HILLS ORGANIC LLC | DL016539 | 2008-05-22 | Inactive | — |
| Black Hills Organics, LLC | DL038987 | 2014-05-29 | Dissolved | Big Springs |
| BLACK HILLS ORIENTEERING CLUB | NS013574 | 2007-11-15 | Dissolved | RAPID CITY |
| Black Hills Ortho Life Cycle, LLC | DL171297 | 2019-10-08 | Dissolved | Rapid City |
| BLACK HILLS ORTHODONTICS, PROF. L.L.C. | DL015859 | 2008-02-22 | Active | RAPID CITY |
| Black Hills Orthopedic & Spine Center, Inc. | DB013768 | 1976-09-01 | Active | Rapid City |
| BLACK HILLS OUTDOOR ADVENTURE OUTFITTERS, INC. | DB037889 | 1996-11-26 | Dissolved | — |
| Black Hills Outdoor Care, LLC | DL275352 | 2024-05-20 | Active | Spearfish |
| BLACK HILLS OUTDOOR DRAMA FOUNDATION | NS014927 | 2012-08-30 | Dissolved | — |
| Black Hills Outdoor Living LLC | DL331338 | 2026-06-16 | Active | Rapid City |
| Black Hills Outdoor LLC | DL128452 | 2016-12-31 | Active | Rapid city |
| Black Hills Outdoor Solutions LLC | DL261367 | 2023-10-25 | Dissolved | Rapid City |
| BLACK HILLS OUTFITTERS, INC. | DB026667 | 1987-09-01 | Inactive | — |
| BLACK HILLS OUTFITTING CO. | FB018849 | 1996-04-15 | Revoked | HILL CITY |
| Black Hills Outpost LLC | DL151086 | 2018-07-13 | Dissolved | RAPID CITY |
| Black Hills Overhead Doors, LLC | DL042251 | 2015-02-23 | Active | RAPID CITY |
| BLACK HILLS PACKING CO. | DB003762 | 1909-09-11 | Dissolved | — |
| BLACK HILLS PADDLERS, INC. | NS013911 | 2008-12-29 | Active | RAPID CITY |
| Black Hills Paint & Supply LLC. | DL248050 | 2023-04-04 | Dissolved | Box Elder |
| Black Hills Painting & Pressure Washing LLC | DL226433 | 2022-05-05 | Suspended | SPEARFISH |
| BLACK HILLS PAINTING, INCORPORATED | DB013791 | 1976-09-07 | Inactive | — |
| Black Hills Painting, LLC | DL129414 | 2017-01-06 | Active | Spearfish |
| BLACK HILLS PAINTLESS DENT REPAIR LLC | DL038105 | 2014-03-27 | Active | RAPID CITY |
| Black Hills Paranormal Investigations LLC | DL278805 | 2024-07-15 | Active | Rapid City |
| Black Hills Parkbuhat LLC | DL213983 | 2021-11-08 | Inactive | Rapid City |
| Black Hills Parking, LLC | DL148275 | 2018-05-15 | Dissolved | Rapid City |
| BLACK HILLS PARKS AND FORESTS ASSOCIATION | NS000573 | 1955-04-07 | Active | Custer |
| Black Hills Parlor LLC | DL212575 | 2021-10-20 | Dissolved | Rapid City |
| BLACK HILLS PARROT WELFARE & EDUCATION CENTER, INC. | NS013569 | 2007-11-09 | Dissolved | BELLE FOURCHE |
| Black Hills Pathfinder, LLC | DL290149 | 2025-01-03 | Dissolved | Black Hawk |
| BLACK HILLS PATHFINDERS, INC. | DB030412 | 1991-03-15 | Inactive | — |
| BLACK HILLS PAWN, LLC | DL021306 | 2010-04-21 | Active | RAPID CITY |
| Black Hills Payroll LLC | DL263397 | 2023-11-29 | Active | Rapid City |
| BLACK HILLS PC, INC. | DB053582 | 2008-05-06 | Dissolved | BELLE FOURCHE |
| BLACK HILLS PEDIATRIC DENTISTRY, P.C. | DB046227 | 2002-12-19 | Active | RAPID CITY |
| BLACK HILLS PEDIATRIC SERVICES, INC. | NS009776 | 1992-12-31 | Inactive | — |
| Black Hills Pediatric Therapy, LLC | DL029655 | 2012-10-09 | Active | RAPID CITY |
| BLACK HILLS PEDIATRICS BUILDING PARTNERSHIP, L.L.P. | DR000191 | 1997-09-19 | Active | Rapid City |
| Black Hills Pediatrics, LLP | DR000177 | 1997-08-05 | Active | Rapid City |
| Black Hills Pelvic Health, PROF. L.L.C. | DL283276 | 2024-09-17 | Dissolved | RAPID CITY |
| Black Hills PEMF, LLC | DL164547 | 2019-05-13 | Active | Spearfish |
| BLACK HILLS PERFORMANCE & TUNING, L.L.C. | DL161616 | 2019-03-12 | Inactive | Rapid City |
| Black Hills Performance LLC | DL221460 | 2022-02-24 | Dissolved | Rapid City |
| Black Hills Performance Products L.L.C | DL246281 | 2023-03-12 | Active | Watertown |
| BLACK HILLS PERFUSION SERVICES CORP. | DB032568 | 1993-01-19 | Inactive | — |
| Black Hills Personal Training LLC | DL259671 | 2023-09-27 | Active | Rapid City |
| Black Hills Pest Control Solutions LLC. | DL316743 | 2025-12-30 | Active | sturgis |
| BLACK HILLS PEST CONTROL, INC. | DB050102 | 2005-09-06 | Active | STURGIS |
| Black Hills Pet Care LLC | DL133677 | 2017-05-23 | Inactive | Rapid City |
| Black Hills Pet Food Pantry Inc. | NS313318 | 2025-11-10 | Active | Lead |
| Black Hills Pet Furniture LLC | DL188845 | 2020-10-05 | Dissolved | Custer |
| BLACK HILLS PETRIFIED FOREST - ELK CREEK RESORT, INC. | DB031603 | 1992-03-30 | Inactive | — |
| BLACK HILLS PHARMACEUTICAL SERVICES, INC. | DB022990 | 1983-12-27 | Dissolved | — |
| Black Hills Pharmacy, Inc. | DB307016 | 2025-08-14 | Active | DEADWOOD |
| Black Hills Pheasants, LLC | DL267677 | 2024-02-01 | Active | Rapid City |
| Black Hills Photography Club | NS131435 | 2017-03-10 | Active | Rapid City |
| Black Hills Photography, LLC | DL174520 | 2019-12-17 | Active | Spearfish |
| BLACK HILLS PHYSICAL THERAPY, INC. | DB040204 | 1998-06-24 | Active | SPEARFISH |
| BLACK HILLS PIANO GALLERY, INC. | DB053840 | 2008-08-07 | Dissolved | RAPID CITY |
| BLACK HILLS PIC'S, LLC | DL011003 | 2006-03-29 | Dissolved | SPEARFISH |
| BLACK HILLS PICKERS INDOOR FLEA MARKET, LLC | DL027056 | 2012-01-30 | Dissolved | RAPID CITY |
| BLACK HILLS PINES LODGE, LLC | DL322325 | 2026-03-02 | Active | HOT SPRINGS |
| BLACK HILLS PINTO HORSE ASSOCIATION, INC. | NS006465 | 1978-04-06 | Inactive | — |
| BLACK HILLS PITA COMPANY, INC. | DB058447 | 2013-12-18 | Dissolved | RAPID CITY |
| BLACK HILLS PIZZA HUT, INC. | DB024935 | 1985-12-09 | Active | Rapid City |
| BLACK HILLS PIZZA, INC. | DB050153 | 2005-09-19 | Dissolved | RAPID CITY |
| BLACK HILLS PLASTERING, INC. | DB054741 | 2009-08-18 | Dissolved | RAPID CITY |
| BLACK HILLS PLASTIC SURGERY, P.C. | DB033189 | 1993-06-29 | Active | RAPID CITY |
| BLACK HILLS PLATING AND POLISHING, LLC. | DL022571 | 2010-10-06 | Dissolved | BLACK HAWK |
| BLACK HILLS PLAYGROUND COMPANY, L.L.C. | DL000126 | 1994-02-17 | Dissolved | — |
| BLACK HILLS PLUMBING, INC. | DB049516 | 2005-03-31 | Active | HILL CITY |
| BLACK HILLS PODIATRY, P.C. | DB034619 | 1994-07-15 | Dissolved | RAPID CITY |
| BLACK HILLS POLE & BUILDING COMPANY, INC. | DB001141 | 1960-07-28 | Dissolved | — |
| BLACK HILLS POLO CLUB, INC. | NS008691 | 1988-03-07 | Inactive | — |
| BLACK HILLS POLYGRAPH, LLC | DL002888 | 2000-03-30 | Inactive | — |
| BLACK HILLS PONDEROSA PINE LLC | DL025990 | 2011-10-17 | Dissolved | Viroqua |
| Black Hills Ponderosa Place, LLC | DL139070 | 2017-10-27 | Active | CUSTER |
| BLACK HILLS PONDEROSA PLACE, LLC | DL015349 | 2007-12-21 | Inactive | Colton |
| BLACK HILLS PONTOON BOATS, LTD. | DB025649 | 1986-08-22 | Inactive | — |
| BLACK HILLS PONY EXPRESS LLC | DL014037 | 2007-06-04 | Active | BLACK HAWK |
| Black Hills Poodles LLC | DL256645 | 2023-08-14 | Dissolved | Belle Fourche |
| Black Hills Pool & Spa LLC | DL198632 | 2021-03-15 | Dissolved | Hill City |
| Black Hills Pool and Spas LLC | DL260009 | 2023-10-03 | Inactive | RAPID CITY |
| Black Hills Pools and Spas LLC | DL250149 | 2023-05-04 | Inactive | RAPID CITY |
| Black Hills Pools and Spaz LLC | DL275176 | 2024-05-16 | Suspended | Rapid City |
| BLACK HILLS PORTABLES, INC. | DB048248 | 2004-05-10 | Active | Rapid City |
| BLACK HILLS PORTRAITS, LLC | DL014896 | 2007-10-19 | Dissolved | RAPID CITY |
| BLACK HILLS POST NO. 5969 VETERANS OF FOREIGN WARS OF THE UNITED STATES | NS002323 | 1968-07-09 | Active | DEADWOOD |
| BLACK HILLS POW-WOW ASSOCIATION | NS008485 | 1987-03-13 | Active | RAPID CITY |
| Black Hills Power Bikes LLC | DL194047 | 2021-01-04 | Active | Custer |
| Black Hills Power Clean, LLC | DL246225 | 2023-03-11 | Dissolved | Rapid City |
| BLACK HILLS POWER EQUIPMENT, INC. | DB054649 | 2009-07-06 | Active | Rapid City |
| BLACK HILLS POWER HOUSE LLC | DL130589 | 2017-02-11 | Dissolved | RAPID CITY |
| BLACK HILLS POWER SPORTS, INC. | DB040696 | 1998-11-13 | Active | Rapid City |
| BLACK HILLS POWER, INC. | DB000778 | 1942-08-27 | Active | Rapid City |
| BLACK HILLS PR, LLC | DL024377 | 2011-04-04 | Dissolved | Spearfish |
| Black Hills Precision Detailing LLC | DL320578 | 2026-02-11 | Active | Rapid City |
| Black Hills Preferred Properties, LLC | DL319734 | 2026-02-02 | Active | Rapid City |
| BLACK HILLS PREMIER CLEANERS, LLC | DL321820 | 2026-02-25 | Active | Box Elder |
| black hills premier interiors LLC | DL257962 | 2023-09-02 | Active | Rapid City |
| Black Hills Premier Painting LLC | DL257216 | 2023-08-22 | Inactive | Rapid city |
| Black Hills Premier Painting LLC | DL323493 | 2026-03-16 | Active | Summerset |
| Black Hills Premier Properties, LTD. | DL265866 | 2024-01-05 | Dissolved | Sturgis |
| Black Hills Premier Stays, LLC | DL329800 | 2026-05-27 | Active | Spearfish |
| BLACK HILLS PREMIER VACATION HOMES LLC | DL226832 | 2022-05-11 | Active | SIOUX FALLS |
| BLACK HILLS PRESCHOOL AND CHILD CARE, INC. | NS007482 | 1982-11-29 | Dissolved | — |
| Black Hills Preservation Project | NS282941 | 2024-09-12 | Active | Custer |
| BLACK HILLS PRESERVATION, INC. | DB025639 | 1986-08-19 | Inactive | — |
| BLACK HILLS PRESIDENTS PARK, INC. | DB044127 | 2001-05-14 | Inactive | — |
| Black Hills Primary Care, P.C. | DB149354 | 2018-06-07 | Active | Rapid City |
| Black Hills Private Holdings LLC | DL219134 | 2022-01-24 | Dissolved | Spearfish |
| Black Hills Process Consulting LLC | DL221193 | 2022-02-22 | Dissolved | Rapid City |
| BLACK HILLS PRODUCTION RENTALS, INC. | DB032320 | 1992-11-18 | Inactive | — |
| Black Hills Productions | NS049943 | 2016-03-23 | Dissolved | Rapid City |
| BLACK HILLS PRODUCTIONS, INC. | DB043641 | 2001-01-05 | Dissolved | SPEARFISH |
| BLACK HILLS PROFESSIONAL HOCKEY, LLC | DL032307 | 2013-05-10 | Inactive | RAPID CITY |
| BLACK HILLS PROFESSIONAL HOME INSPECTIONS, LLC | DL024672 | 2011-05-12 | Active | RAPID CITY |
| BLACK HILLS PROFESSIONAL PAINTING, INC. | DB045812 | 2002-08-27 | Active | Pierre |
| BLACK HILLS PROFESSIONAL PHOTOGRAPHERS ASSOCIATION | NS011955 | 2002-02-15 | Dissolved | RAPID CITY |
| BLACK HILLS PROFESSIONAL SERVICES, INC. | DB047040 | 2003-06-26 | Inactive | — |
| BLACK HILLS PROPANE, INC. | DB040351 | 1998-07-29 | Dissolved | — |
| BLACK HILLS PROPANE, INC. | DB003701 | 1964-06-23 | Dissolved | — |
| Black Hills Properties Group LLC | DL234648 | 2022-09-14 | Active | Hot Springs |
| BLACK HILLS PROPERTIES, INC. | DB039677 | 1998-02-12 | Active | RAPID CITY |
| BLACK HILLS PROPERTIES, INC. | DB025294 | 1986-04-08 | Inactive | — |
| Black Hills Property & RV Services LLC | DL332041 | 2026-06-25 | Active | Summerset |
| Black Hills Property Group LLC | DL332786 | 2026-07-05 | Active | Rapid City |
| Black Hills Property Holdings LLC | DL208786 | 2021-08-23 | Dissolved | Rapid City |
| Black Hills Property Improvement LLC | DL226797 | 2022-05-11 | Active | Box Elder |
| Black Hills Property LLC | DL173634 | 2019-11-29 | Active | Watertown |
| Black Hills Property Maintenance LLC | DL159119 | 2019-01-18 | Active | Rapid City |
| Black Hills Property Management LLC | DL043493 | 2015-04-30 | Dissolved | Rapid City |
| BLACK HILLS PROPERTY MANAGEMENT LLC. | DL024674 | 2011-05-13 | Dissolved | DEADWOOD |
| BLACK HILLS PROPERTY MANAGEMENT, INC. | DB032395 | 1992-12-10 | Inactive | — |
| Black Hills Property Management, LLC | DL281682 | 2024-08-24 | Dissolved | Rapid City |
| Black Hills Property Masters LLC | DL270489 | 2024-03-12 | Active | Rapid City |
| Black Hills Property Operations LLC | DL333942 | 2026-07-17 | Active | Piedmont |
| Black Hills Property Rentals LLC | DL256978 | 2023-08-19 | Active | Lead |
| Black Hills Property Services L.L.C. | DL180240 | 2020-04-21 | Dissolved | Whitewood |
| Black Hills Property Services LLC | DL149210 | 2018-06-05 | Dissolved | Rapid City |
| BLACK HILLS PROPERTY SERVICES, LLC | DL020181 | 2009-11-16 | Dissolved | RAPID CITY |
| Black Hills Property Solutions LLC | DL305310 | 2025-07-23 | Active | Hill City |
| Black Hills Proprietors, Inc. | DB041436 | 1999-05-17 | Active | RAPID CITY |
| BLACK HILLS PROSTHETICS CENTER, INC. | DB043158 | 2000-08-24 | Dissolved | — |
| Black Hills Protection LLC | DL281342 | 2024-08-19 | Active | Caputa |
| BLACK HILLS PROVISIONS, LLC | DL223006 | 2022-03-17 | Active | Rapid City |
| BLACK HILLS PSYCHOLOGY, LLC | DL022211 | 2010-08-20 | Active | Spearfish |
| BLACK HILLS PT CRUISERS, INC. | NS013109 | 2006-04-12 | Inactive | — |
| BLACK HILLS PUBLISHERS, INC. | DB000929 | 1960-02-18 | Inactive | — |
| BLACK HILLS PUBLISHING MONTANA, LLC | FL002448 | 2005-06-28 | Inactive | RAPID CITY |
| BLACK HILLS PUG RESCUE | NS013378 | 2007-03-26 | Inactive | — |
| BLACK HILLS PURE WATER, INC. | DB044240 | 2001-06-20 | Active | SPEARFISH |
| Black Hills Pyro LLC | DL278244 | 2024-07-03 | Dissolved | Rapid City |
| Black Hills Q, L.L.C. | DL039364 | 2014-06-26 | Dissolved | RAPID CITY |