| Black Hills Custom Pools LLC | DL046979 | 2016-02-05 | Dissolved | RAPID CITY |
| BLACK HILLS CUSTOM T'S INC | DB201332 | 2021-04-21 | Active | CUSTER |
| BLACK HILLS CUSTOM TOURS & SHUTTLE, INC. | DB048223 | 2004-04-30 | Dissolved | RAPID CITY |
| Black Hills Customm Furniture LLC | DL275134 | 2024-05-16 | Dissolved | Rapid City |
| BLACK HILLS CUTTING & TEAM PENNING CLUB | NS009753 | 1992-11-25 | Inactive | — |
| BLACK HILLS CUTTING HORSE ASSOCIATION | NS007792 | 1984-03-12 | Inactive | — |
| BLACK HILLS CYCLE CLASSIC, INC. | DB030797 | 1991-07-10 | Dissolved | STURGIS |
| BLACK HILLS CYCLING | NS014552 | 2011-03-14 | Dissolved | — |
| BLACK HILLS DAKOTA DISTILLERY, L.L.C. | DL024278 | 2011-04-04 | Inactive | STURGIS |
| Black Hills Dance Boutique LLC | DL240326 | 2022-12-14 | Active | Rapid City |
| BLACK HILLS DANCE COMPANY | NS010432 | 1995-10-27 | Active | RAPID CITY |
| BLACK HILLS DANCE THEATRE, LTD. | NS006147 | 1976-12-30 | Active | Rapid City |
| BLACK HILLS DATA, L.L.C. | DL001394 | 1997-10-01 | Inactive | — |
| Black Hills Dead Presidents Rugby Football Club | NS252011 | 2023-06-01 | Active | Rapid City |
| BLACK HILLS DECKS LLC | DL182716 | 2020-06-08 | Suspended | BOX ELDER |
| Black Hills Delivery LLC | DL219549 | 2022-01-31 | Dissolved | Sioux Falls |
| Black Hills Dent Daddy LLC | DL165278 | 2019-05-29 | Dissolved | Rapid City |
| Black Hills Dental Study Club LLC | DL281618 | 2024-08-23 | Active | Rapid City |
| BLACK HILLS DERMATOLOGY, P.C. | DB044047 | 2001-04-24 | Active | RAPID CITY |
| BLACK HILLS DESIGN AND CONSTRUCTION INC. | DB019901 | 1980-07-30 | Dissolved | CUSTER |
| Black Hills Designs LLC | DL227864 | 2022-05-27 | Active | Custer |
| BLACK HILLS DESTINATIONS LLC | DL155461 | 2018-10-23 | Active | RAPID CITY |
| BLACK HILLS DETACHMENT MARINE CORPS LEAGUE | NS011927 | 2002-01-17 | Active | Caputa |
| Black Hills Detail Lab LLC | DL334612 | 2026-07-24 | Active | Rapid City |
| Black Hills Detail LLC | DL192531 | 2020-12-09 | Dissolved | Watertown |
| Black Hills Developers Corp. | DB204552 | 2021-06-11 | Dissolved | KEYSTONE |
| Black Hills Development Group LLC | DL173209 | 2019-11-19 | Active | Spearfish |
| BLACK HILLS DEVELOPMENT, INC. | DB013990 | 1976-12-16 | Dissolved | SPEARFISH |
| Black Hills Development, LLC | DL204601 | 2021-06-14 | Active | Hill City |
| BLACK HILLS DHI ASSOCIATION | CO000654 | 1970-03-17 | Inactive | — |
| BLACK HILLS DIABETES ASSOCIATION, INC. | NS010056 | 1994-03-21 | Dissolved | RAPID CITY |
| BLACK HILLS DIALYSIS SYSTEMS, INC. | DB032923 | 1993-04-15 | Dissolved | RAPID CITY |
| BLACK HILLS DIALYSIS, LLC | DL007014 | 2004-03-03 | Active | RAPID CITY |
| BLACK HILLS DIGITAL MAPPING ASSOCIATION | NS012811 | 2005-04-08 | Dissolved | RAPID CITY |
| Black Hills Digital Marketing LLC | DL183127 | 2020-06-16 | Suspended | Wanblee |
| Black Hills Digital Solutions LLC | DL217987 | 2022-01-06 | Dissolved | Sturgis |
| Black Hills Digs, LLC | DL230748 | 2022-07-18 | Active | Rapid City |
| Black Hills Diner LLC | DL211588 | 2021-10-04 | Dissolved | Belle Fourche |
| Black Hills Directional Drilling LLC | DL317705 | 2026-01-11 | Active | Sioux Falls |
| BLACK HILLS DISABILITY ADVOCATES, INC. | DB049883 | 2005-06-23 | Inactive | — |
| Black Hills Disc Golf Club Incorporated | DB244213 | 2023-02-11 | Active | Rapid City |
| Black Hills Discount Club LLC | DL144197 | 2018-02-20 | Dissolved | Rapid City |
| BLACK HILLS DISCOUNTERS, LLC | DL029821 | 2012-10-26 | Dissolved | RAPID CITY |
| Black Hills Dispensary Inc. | DB199286 | 2021-03-23 | Suspended | Faribault |
| BLACK HILLS DISPOSAL, INC. | DB050730 | 2006-02-17 | Dissolved | LEAD |
| Black Hills Distributing LLC | DL164674 | 2019-05-15 | Active | Rapid City |
| BLACK HILLS DISTRICT DENTAL SOCIETY | NS004583 | 1969-03-11 | Active | RAPID CITY |
| BLACK HILLS DOG TRAINING CLUB, INC. | NS012281 | 2003-04-11 | Active | Fairburn |
| BLACK HILLS DOGOS LLC | DL226452 | 2022-05-05 | Dissolved | SIOUX FALLS |
| BLACK HILLS DOLLAR A DAY INVESTING, LLC | DL017488 | 2008-10-07 | Active | Rapid City |
| Black Hills Domestiques Bicycle Club LLC | DL043116 | 2015-04-29 | Dissolved | RAPID CITY |
| BLACK HILLS DOOR SYSTEMS, INC. | DB037213 | 1996-05-13 | Dissolved | RAPID CITY |
| Black Hills Doors, LLC | DL036952 | 2014-01-17 | Inactive | RAPID CITY |
| BLACK HILLS DRAG RACING ASSOCIATION, INC. | NS013072 | 2006-03-16 | Dissolved | RAPID CITY |
| BLACK HILLS DRAGWAY, INCORPORATED | DB057909 | 2013-07-12 | Dissolved | SMYRNA |
| Black Hills Drake Smiles PC | DB260539 | 2023-10-11 | Active | Redfield |
| BLACK HILLS DREAM, LLC | DL013741 | 2007-04-24 | Inactive | RAPID CITY |
| BLACK HILLS DRIVER EDUCATION, L.L.C. | DL021959 | 2010-07-15 | Inactive | BLACK HAWK |
| Black Hills Driving Experience, LLC | DL049801 | 2016-09-02 | Inactive | DOUGLAS |
| Black Hills Dry Ice Blasting LLC | DL291783 | 2025-01-25 | Active | Whitewood |
| BLACK HILLS DRYWALL, INC. | DB048356 | 2004-06-01 | Active | STURGIS |
| Black Hills DTE, LLC | DL325584 | 2026-04-08 | Active | Rapid City |
| Black Hills Dual Sport LLC | DL164921 | 2019-05-20 | Dissolved | Buffalo Gap |
| Black Hills Dumpster Rentals LLC | DL146878 | 2018-04-13 | Active | Box Elder |
| BLACK HILLS DUST N CLEAN LLC | DL279958 | 2024-08-01 | Active | SPEARFISH |
| BLACK HILLS DYNO AND PERFORMANCE LLC | DL266021 | 2024-01-08 | Active | Whitewood |
| Black Hills E-Bikes Corp. | DB228522 | 2022-06-08 | Active | Rapid City |
| BLACK HILLS EAR, NOSE & THROAT ASSOCIATES, P.C. | DB021832 | 1982-10-01 | Dissolved | — |
| BLACK HILLS ECHO PARK ESTATES, INC. | NS009541 | 1991-12-31 | Active | RAPID CITY |
| BLACK HILLS EDUCATIONAL INSTITUTE, INC. | NS009982 | 1993-11-22 | Active | RAPID CITY |
| Black Hills Elderberry LLC | DL323268 | 2026-03-13 | Active | Rapid City |
| BLACK HILLS ELECTRIC COOPERATIVE, INC. | PU000357 | 1940-02-23 | Active | — |
| BLACK HILLS ELECTRIC GENERATION, LLC | DL017052 | 2008-07-30 | Active | Rapid City |
| Black Hills Electric Parent Holdings, LLC | DL235007 | 2022-09-20 | Active | Rapid City |
| Black Hills Electric, LLC | DL135147 | 2017-07-18 | Active | Rapid City |
| BLACK HILLS ELECTRICAL SERVICE, LLC | DL049055 | 2016-06-27 | Suspended | SPEARFISH |
| Black Hills Electrolysis Hair Studio, LLC | DL292059 | 2025-02-01 | Active | Rapid City |
| Black Hills Electrolysis, LLC | DL151013 | 2018-07-12 | Inactive | Rapid City |
| BLACK HILLS ELECTRONIC SUPPLY, INC. | DB002909 | 1962-09-10 | Inactive | — |
| Black Hills Elevated Ltd. | DL317847 | 2026-01-12 | Active | Lead |
| BLACK HILLS ELEVATOR SYSTEMS, INC. | DB037311 | 1996-06-05 | Dissolved | — |
| BLACK HILLS ELEVATOR, LLP | DR000320 | 1998-12-08 | Inactive | — |
| Black Hills Elite Construction, LLC | DL251690 | 2023-05-26 | Dissolved | Box Elder |
| BLACK HILLS ELITEPRO, LLC | DL253016 | 2023-06-16 | Active | RAPID CITY |
| BLACK HILLS ELK, INC. | DB026614 | 1987-08-10 | Inactive | — |
| Black Hills Embrace, LLC | DL190662 | 2020-11-04 | Dissolved | WATERTOWN |
| BLACK HILLS EMERGENCY SERVICES, LLC | DL030455 | 2012-12-13 | Dissolved | Sioux Falls |
| BLACK HILLS EMS, LLC | DL032321 | 2013-05-06 | Dissolved | CLINTON |
| Black Hills Endurance LLC | DL317924 | 2026-01-13 | Active | Deadwood |
| BLACK HILLS ENERGY COALITION | NS006745 | 1979-06-21 | Inactive | — |
| Black Hills Energy Renewable Resources, LLC | DL231586 | 2022-07-28 | Active | Rapid City |
| BLACK HILLS ENERGY RESOURCES, INC. | DB038737 | 1997-06-25 | Dissolved | RAPID CITY |
| BLACK HILLS ENERGY TERMINAL, LLC | DL002499 | 1999-09-29 | Dissolved | RAPID CITY |
| BLACK HILLS ENERGY, INC. | DB043742 | 2001-01-29 | Inactive | — |
| BLACK HILLS ENGINEERING AND DEVELOPMENT CORPORATION | DB025410 | 1986-05-22 | Active | CUSTER |
| BLACK HILLS ENGINEERING AND MANUFACTURING, INC. | FB029455 | 2005-03-15 | Revoked | JACKSONVILLE |
| Black Hills Engineering Services LLC | DL258267 | 2023-09-07 | Active | Spearfish |
| Black Hills Engraving and Design LLC | DL247380 | 2023-03-27 | Inactive | Rapid City |
| Black Hills Engraving LLC | DL280961 | 2024-08-13 | Active | Custer |
| BLACK HILLS ENOLOGICAL SOCIETY; CELLAR #1 | NS012335 | 2003-07-03 | Dissolved | Rapid City |
| Black Hills ENT, Prof. LLC | DL188507 | 2020-09-29 | Dissolved | Rapid City |
| Black Hills Enterprise, LLC | DL190149 | 2020-10-27 | Active | Hill City |
| BLACK HILLS ENTERPRISES, INC. | DB020764 | 1981-07-01 | Inactive | — |
| BLACK HILLS ENTERPRISES, LLC | DL007250 | 2004-04-27 | Dissolved | — |
| Black Hills Enterprises, LLC | DL211209 | 2021-09-29 | Active | Bison |
| BLACK HILLS ENVIROKLEAN, INC. | DB039813 | 1998-03-24 | Dissolved | — |
| BLACK HILLS ENVIRONMENTAL BUILDING & DESIGN, LLC | DL013790 | 2007-04-30 | Dissolved | — |
| Black Hills Environmental Institute | NS178237 | 2020-03-03 | Dissolved | Rapid City |
| Black Hills Environmental Institute Co | DB177024 | 2020-02-07 | Dissolved | Rapid City |
| BLACK HILLS ENVIRONMENTAL PARTNER, LLC | DL023057 | 2010-12-06 | Inactive | BOX ELDER |
| BLACK HILLS ENVIRONMENTAL SOLUTIONS, L.L.C. | DL021654 | 2010-06-04 | Suspended | RAPID CITY |
| BLACK HILLS ENVIROTECH, INC. | DB029718 | 1990-08-01 | Inactive | — |
| BLACK HILLS EQUESTRIAN CENTER, LTD. | DB054550 | 2009-05-28 | Dissolved | SPEARFISH |
| Black Hills Equine Productions, LLC | DL131076 | 2017-02-27 | Dissolved | BELLE FOURCHE |
| BLACK HILLS EQUINE RESCUE INC. | NS200975 | 2021-04-15 | Dissolved | VALE |
| Black Hills Equine Spa, LLC | DL165482 | 2019-06-03 | Active | Belle Fourche |
| Black Hills Equipment Rentals, LLC | DL130414 | 2017-02-07 | Active | SPEARFISH |
| BLACK HILLS EQUIPMENT, INC. | DB012733 | 1975-02-04 | Dissolved | — |
| Black Hills Equipment, LLC | DL046495 | 2015-12-31 | Dissolved | RAPID CITY |
| BLACK HILLS EQUITY FUND, LLC | DL013688 | 2007-04-18 | Inactive | — |
| Black Hills Equity Group LLC | DL283864 | 2024-09-25 | Dissolved | Summerset |
| Black Hills Equity, LLC | DL203919 | 2021-06-01 | Active | Frisco |
| Black Hills ERA Aesthetics LLC | DL310851 | 2025-10-06 | Active | Spearfish |
| BLACK HILLS ERRAND & CONCIERGE SERVICE, LLC | DL016828 | 2008-06-26 | Inactive | — |
| BLACK HILLS ESCAPES, LLC | DL008719 | 2005-02-23 | Inactive | — |
| BLACK HILLS ESCROW, LLC | DL044681 | 2015-08-12 | Active | Belle Fourche |
| Black Hills Estates, LLC | DL192436 | 2020-12-08 | Inactive | Hollywood |
| BLACK HILLS EVENTS INC | DB050090 | 2005-09-01 | Dissolved | — |
| BLACK HILLS EXCAVATING SERVICES, INC. | DB039190 | 1997-10-31 | Dissolved | rapid city |
| BLACK HILLS EXCHANGE, LLC | DL016676 | 2008-06-09 | Inactive | — |
| BLACK HILLS EXECUTIVE LODGING, INC. | DB049002 | 2004-12-14 | Active | Sturgis |
| BLACK HILLS EXPEDITIONS, INC. | DB020409 | 1981-02-12 | Inactive | — |
| BLACK HILLS EXPEDITIONS, INC. | DB035379 | 1995-02-03 | Inactive | — |
| Black Hills Experience LLC | DL190585 | 2020-11-03 | Active | Spearfish |
| BLACK HILLS EXPLORATION AND PRODUCTION, INC. | FB009651 | 1984-06-27 | Inactive | Rapid City |
| Black Hills Expo Group, LLC | DL039445 | 2014-07-03 | Dissolved | Rapid City |
| Black Hills Express Forwarders LLC | DL269813 | 2024-03-03 | Active | Rapid City |
| Black Hills Exteriors LLC | DL038371 | 2014-04-16 | Active | RAPID CITY |
| BLACK HILLS FABRICATION, INC. | DB055346 | 2010-05-17 | Dissolved | RAPID CITY |
| Black Hills Family Connections, LLC | DL039359 | 2014-06-26 | Inactive | RAPID CITY |
| Black Hills Family Entertainment LLC | DL286123 | 2025-01-28 | Dissolved | Rapid City |
| Black Hills Family Fun, LLC | DL147960 | 2018-05-08 | Active | Mitchell |
| BLACK HILLS FAMILY HEALTH CLINIC, P.C. | DB052188 | 2007-03-26 | Dissolved | HOT SPRINGS |
| Black Hills Family Office, LLC | DL233783 | 2022-08-31 | Active | Pierre |
| Black Hills Family Practice and Wellness, PLLC | DL276166 | 2024-06-02 | Active | STURGIS |
| Black Hills Family Practice, Inc | DB174153 | 2020-01-01 | Dissolved | Sturgis |
| BLACK HILLS FARM MUTUAL INSURANCE COMPANY | IN000008 | 1914-01-21 | Active | — |
| BLACK HILLS FARMER'S MARKET, INC. | NS012150 | 2002-11-06 | Active | Caputa |
| BLACK HILLS FAST FOODS, INC. | DB012905 | 1975-05-23 | Inactive | — |
| Black Hills Fasteners, LLC | DL271451 | 2024-03-25 | Active | Rapid City |
| Black Hills FBA, LLC | DL046198 | 2015-12-14 | Inactive | Rapid City |
| BLACK HILLS FCU CHARITABLE FUND INC. | NS014364 | 2010-07-14 | Active | Rapid City |
| BLACK HILLS FEED AND SUPPLY, LLC | DL031697 | 2013-03-18 | Inactive | STURGIS |
| BLACK HILLS FELLOWSHIP MINISTRIES, INC. | CH003478 | 2002-09-11 | Active | RAPID CITY |
| Black Hills Fence and Construction LLC | DL316976 | 2026-01-02 | Active | Rapid City |
| BLACK HILLS FENCE, INC. | DB037409 | 1996-07-03 | Inactive | — |
| Black Hills Fencing LLC | DL206492 | 2021-07-14 | Dissolved | Rapid City |
| BLACK HILLS FIBER ARTS FAIR, L.L.C. | DL031673 | 2013-03-15 | Inactive | RAPID CITY |
| BLACK HILLS FIBER SYSTEMS, INC. | DB039972 | 1998-04-23 | Dissolved | WEST POINT |
| BLACK HILLS FIBERGLASS, LLC | DL028832 | 2012-07-16 | Dissolved | BELLE FOURCHE |
| Black Hills Fiduciary Services LLC | DL303257 | 2025-06-25 | Active | WATERTOWN |
| BLACK HILLS FIGURE SKATING CLUB | NS012226 | 2003-01-31 | Active | RAPID CITY |
| BLACK HILLS FILM FESTIVAL | NS014136 | 2009-09-24 | Active | Rapid City |
| BLACK HILLS FILM RESOURCE COUNCIL, INC. | NS012900 | 2005-07-21 | Inactive | — |
| Black Hills Films LLC | DL233910 | 2022-09-02 | Dissolved | Rapid City |
| Black Hills Final Clean LLC | DL209813 | 2021-09-09 | Dissolved | Rapid City |
| BLACK HILLS FINANCIAL LLC | DL010885 | 2006-03-14 | Inactive | RAPID CITY |
| Black Hills Financial Planning, LLC | DL226586 | 2022-05-08 | Active | Vale |
| BLACK HILLS FINANCIAL, LLC | DL138420 | 2017-10-13 | Active | Scottsdale |
| Black Hills Financing LLC | DL227017 | 2022-05-13 | Dissolved | Lake Forest |
| BLACK HILLS FINDINGS, INC. | DB026759 | 1987-09-30 | Inactive | — |
| Black Hills Fire Chaplains Association | NS163372 | 2019-04-18 | Active | RAPID CITY |
| BLACK HILLS FIREARMS PARTNERS, INC. | DB052056 | 2007-02-20 | Dissolved | RAPID CITY |
| Black Hills Fireplace Service & Maintenance, LLC | DL172424 | 2019-10-31 | Dissolved | Rapid City |
| Black Hills Fireplace, LLC | DL043106 | 2015-04-27 | Active | RAPID CITY |
| Black Hills Fireside Counseling LLC | DL164338 | 2019-05-08 | Active | Custer |
| Black Hills Fishing Guide, LLC | DL260767 | 2023-10-17 | Active | Rapid City |
| Black Hills Fishing Guides LLC | DL212154 | 2021-10-15 | Inactive | Edgemont |
| Black Hills Fitness Repair LLC | DL231485 | 2022-07-27 | Dissolved | HOT SPRINGS |
| BLACK HILLS FITNESS, L.L.C. | DL012896 | 2007-01-08 | Dissolved | RAPID CITY |
| Black Hills Fix It & Fab LLC | DL230195 | 2022-07-07 | Inactive | Nisland |
| BLACK HILLS FLEA MARKET, L.L.C. | DL013426 | 2007-03-15 | Inactive | — |
| BLACK HILLS FLOORING, LLC | DL140972 | 2017-12-13 | Active | RAPID CITY |
| BLACK HILLS FLORAL, INC. | DB044342 | 2001-07-18 | Inactive | — |
| BLACK HILLS FLORIDA CHARTERS, INC. | FB012918 | 1989-08-18 | Inactive | RAPID CITY |
| Black Hills Flowers and Cakes LLC | DL162234 | 2019-04-01 | Active | Central City |
| BLACK HILLS FLY FISHING GEAR AND SERVICES, L.L.C. | DL001038 | 1996-11-25 | Inactive | — |
| BLACK HILLS FLYFISHERS | NS009197 | 1990-07-09 | Active | RAPID CITY |
| Black Hills FlyIn | NS334192 | 2026-07-20 | Active | SPEARFISH |
| Black Hills FlyIn, LLC | DL305761 | 2025-07-29 | Inactive | Spearfish |
| Black Hills Flyway LLC | DL224925 | 2022-04-14 | Active | HOT SPRINGS |
| BLACK HILLS FOOD AND BEVERAGE MANAGEMENT COMPANY | DB028505 | 1989-06-23 | Inactive | — |
| Black Hills Food and Fire LLC | DL186233 | 2020-08-18 | Dissolved | Black Hawk |
| BLACK HILLS FOOD SERVICES, INC. | DB039048 | 1997-09-18 | Dissolved | RAPID CITY |
| BLACK HILLS FOOT CLINIC, P.C. | DB038915 | 1997-08-13 | Dissolved | — |
| BLACK HILLS FOOT CLINIC, P.C. | DB034836 | 1994-09-23 | Dissolved | — |
| Black Hills Foot Zoning LLC | DL246496 | 2023-05-01 | Active | Rapid City |
| Black Hills Ford & Mustang Club | NS009629 | 1992-05-26 | Active | RAPID CITY |
| BLACK HILLS FOREST ACRES, INC. | DB032573 | 1993-01-19 | Inactive | — |
| BLACK HILLS FOREST ACRES, L.L.C. | DL008201 | 2004-11-17 | Dissolved | SPEARFISH |