| Northern Capital Equipment, LLC | — | DL198403 | 2021-03-11 | Suspended | Watertown |
| NORTHERN CAR BROKERS LLC | — | DL129988 | 2017-01-26 | Active | Belle Fourche |
| Northern Cast Stone LLC | — | DL041613 | 2014-12-19 | Active | Castlewood |
| NORTHERN CATTLE COMPANY, LLC | — | DL025758 | 2011-09-19 | Dissolved | BROOKINGS |
| Northern Circle Holdings LLC | — | DL312783 | 2025-11-02 | Active | Mitchell |
| Northern Clearing, Inc. | — | FB167416 | 2019-07-16 | Active | Ashland |
| NORTHERN COAL PIPELINE COMPANY | — | FB008751 | 1983-01-07 | Inactive | OMAHA |
| NORTHERN COMMONS APARTMENTS, LLC | — | DL029896 | 2012-11-02 | Active | Aberdeen |
| NORTHERN COMMUNICATIONS ASSOCIATES INC. | — | FB009511 | 1984-04-18 | Revoked | GREAT FALLS |
| NORTHERN COMMUNICATIONS ASSOCIATES, INC. | — | FB012097 | 1988-05-20 | Revoked | WILMINGTON |
| NORTHERN COMPONENTS, INC. | — | DB021849 | 1982-10-12 | Dissolved | — |
| NORTHERN CON-AGG, INC. | — | FB011354 | 1987-03-06 | Inactive | PLYMOUTH |
| NORTHERN CON-AGG, LLP | — | FR000196 | 2008-12-30 | Revoked | Plymouth |
| NORTHERN CONCRETE CONSTRUCTION, INC. | — | FB038701 | 2015-07-16 | Revoked | DENMARK |
| Northern Concrete, LLC | — | DL133540 | 2017-05-18 | Active | Spearfish |
| NORTHERN CONSTRUCTORS & ENGINEERS, LLC | — | DL023010 | 2010-11-29 | Dissolved | SIOUX FALLS |
| NORTHERN CONSULTANTS, INC. | — | DB026522 | 1987-07-02 | Inactive | — |
| NORTHERN CONTRACT SERVICE, CO. | — | DB013964 | 1976-12-06 | Dissolved | — |
| NORTHERN COURT SYSTEMS, INC. | — | FB016263 | 1993-08-09 | Revoked | SALOL |
| Northern Crane, LLC | — | FL262779 | 2023-11-17 | Active | Palmer |
| Northern D - Lights Ranch LLC | — | DL133768 | 2017-05-26 | Dissolved | ELLENDALE |
| NORTHERN DAKOTA HEALTH COMPANY | — | DB024256 | 1985-03-13 | Dissolved | ABERDEEN |
| NORTHERN DEVELOPMENT, LLC | — | DL012056 | 2006-09-05 | Dissolved | RAPID CITY |
| NORTHERN DEWATERING, INC. | — | FB021409 | 1998-06-08 | Active | ROGERS |
| NORTHERN DEWATERING, INC. | — | FB019345 | 1996-09-27 | Revoked | ROGERS |
| NORTHERN DIRECTIONAL, LLC | — | DL180936 | 2020-05-04 | Active | Brookings |
| NORTHERN ECOMMERCE, INC. | — | DB043014 | 2000-07-07 | Inactive | — |
| NORTHERN ELECTRIC CONSTRUCTION, INC. | — | FB008811 | 1983-02-15 | Revoked | FARGO |
| NORTHERN ELECTRIC COOPERATIVE, INC. | — | PU000472 | 1941-05-03 | Active | — |
| NORTHERN ELECTRIC COOPERATIVE, INC. | — | CO000472 | 1941-05-03 | Active | BATH |
| NORTHERN ELECTRIC, INC. DOING BUSINESS AS COLORADO/NORTHERN ELECTRIC, INC. | — | FB035139 | 2011-05-02 | Revoked | THORNTON |
| NORTHERN EMPIRE PIZZA, INC. | — | FB009524 | 1984-04-25 | Revoked | FARGO |
| NORTHERN ENERGY MANAGEMENT COMPANY, INC. | — | DB023145 | 1984-02-13 | Dissolved | — |
| NORTHERN ENERGY SOFTWARE, LLC | — | DL015628 | 2008-01-24 | Dissolved | — |
| NORTHERN ENGINEERING AND TESTING, INC. | — | FB010952 | 1986-06-30 | Revoked | GREAT FALLS |
| Northern Enterprise LLC | — | DL046861 | 2016-01-25 | Active | HILL CITY |
| NORTHERN ENTERPRISES, INC. | — | DB036159 | 1995-08-17 | Active | FARGO |
| Northern Escape, LLC | — | DL249633 | 2023-04-27 | Active | Sioux Falls |
| NORTHERN EUROPEAN COMPUTER CONSULTING, INC. | — | DB036984 | 1996-03-25 | Inactive | — |
| NORTHERN EXPOSURE, LLC | — | DL027549 | 2012-03-15 | Dissolved | WINNIPEGE |
| NORTHERN EXPOSURE, LLC | — | DL322190 | 2026-03-02 | Active | Sioux Falls |
| NORTHERN EXTRUSION TOOLING, INC. | — | DB024951 | 1985-12-16 | Active | YANKTON |
| NORTHERN FACTORY SALES, INC. | — | FB025979 | 2002-02-20 | Active | WILLMAR |
| NORTHERN FARM SUPPLY | — | DB002632 | 1962-02-09 | Dissolved | — |
| NORTHERN FEED & SUPPLY CO. | — | DB005091 | 1965-07-20 | Inactive | — |
| NORTHERN FEEDERS, INC. | — | DB016782 | 1979-06-11 | Inactive | — |
| NORTHERN FILM TRANSPORT, INC. | — | 19630119D | 1963-12-11 | Dissolved | — |
| Northern Fire and Safety LLC | — | DL174524 | 2020-01-01 | Active | LEMMON |
| NORTHERN FORT PLAYHOUSE FOUNDATION | — | NS013076 | 2006-03-22 | Active | BRITTON |
| NORTHERN GAMING, INC. | — | DB031679 | 1992-04-21 | Dissolved | — |
| NORTHERN GEOPHYSICAL OF AMERICA, INC. | — | FB018647 | 1996-02-07 | Inactive | HOUSTON |
| NORTHERN GRAIN COMPANY | — | DB000485 | 1959-03-17 | Dissolved | — |
| NORTHERN GRAIN DESIGN AND CONSTRUCTION, INC. | — | FB029813 | 2005-07-27 | Revoked | CLARA CITY |
| NORTHERN GREAT PLAINS EMERGENCY MEDICAL SERVICES ASSOCIATION | — | NS013322 | 2007-01-16 | Inactive | PINE RIDGE |
| NORTHERN GROUP HOUSING, LLC | — | FL006309 | 2012-05-16 | Active | Malvern |
| NORTHERN GROWERS COOPERATIVE | — | CO000860 | 2000-04-14 | Dissolved | — |
| NORTHERN GROWERS, LLC | — | DL004604 | 2002-04-01 | Dissolved | BIG STONE CITY |
| NORTHERN HEIGHTS ASSOCIATES, LIMITED PARTNERSHIP | — | FP000053 | 1989-04-24 | Active | CARLSBAD |
| NORTHERN HEIGHTS DEVELOPMENT II LIMITED PARTNERSHIP | — | DP001715 | 2006-01-25 | Active | — |
| NORTHERN HEIGHTS DEVELOPMENT III LIMITED PARTNERSHIP | — | DP001860 | 2008-01-17 | Active | — |
| NORTHERN HEIGHTS DEVELOPMENT LIMITED PARTNERSHIP | — | DP001511 | 2004-02-12 | Active | — |
| NORTHERN HEIGHTS, LLC | — | FL002256 | 2005-02-01 | Inactive | DENVER |
| NORTHERN HILLS ALCOHOL AND DRUG SERVICES, INC. | Health care and social assistance | NS005449 | 1973-11-05 | Active | STURGIS |
| NORTHERN HILLS ALLIANCE FOR CHILDREN | — | NS013981 | 2009-03-26 | Active | Deadwood |
| northern hills alternative health LLC | — | DL213899 | 2021-11-06 | Active | Sturgis |
| NORTHERN HILLS AMATEUR HOCKEY ASSOCIATION | — | NS049612 | 2015-03-16 | Active | SPEARFISH |
| Northern Hills Amateur Radio Club | — | NS049031 | 2013-10-21 | Dissolved | BELLE FOURCHE |
| NORTHERN HILLS APPLIANCE, COMPANY | — | DB013192 | 1975-11-03 | Dissolved | — |
| NORTHERN HILLS ARCHERS | — | NS013692 | 2008-04-09 | Dissolved | Nemo |
| NORTHERN HILLS AREA COURT APPOINTED SPECIAL ADVOCATE (CASA) PROGRAM (ALSO LISTED AS COURT APPOINTED SPE | — | NS008627 | 1987-11-25 | Active | Spearfish |
| NORTHERN HILLS BAGELS & ESPRESSO, INC. | — | DB038549 | 1997-05-07 | Dissolved | — |
| Northern Hills Barbershop, LLC | — | DL239097 | 2022-11-22 | Active | Spearfish |
| NORTHERN HILLS BASEBALL CLUB, INC. | — | NS010044 | 1994-03-02 | Inactive | — |
| NORTHERN HILLS BIBLICAL COUNSELING, INC. | — | NS013444 | 2007-06-04 | Inactive | — |
| NORTHERN HILLS BOOKKEEPING, LLC | — | DL031594 | 2013-03-11 | Dissolved | BELLE FOURCHE |
| NORTHERN HILLS BOW HUNTERS | — | NS013060 | 2006-02-28 | Active | Spearfish |
| NORTHERN HILLS BUJIN KI RYU JUJITSU, LLC | — | DL178048 | 2020-02-28 | Active | Belle Fourche |
| Northern Hills Cannabis Care LLC | — | DL215090 | 2021-11-23 | Inactive | Spearfish |
| NORTHERN HILLS CENTENNIAL DEVELOPMENT COMPANY, INCORPORATED | — | DB011669 | 1973-05-02 | Dissolved | — |
| NORTHERN HILLS CHAPTER 11 DAV | — | NS215968 | 2021-12-08 | Active | PIEDMONT |
| Northern Hills Chiropractic, P.C. | — | DB060194 | 2015-07-09 | Dissolved | SPEARFISH |
| NORTHERN HILLS CHIROPRACTIC, P.C. | — | DB041642 | 1999-07-15 | Inactive | SPEARFISH |
| Northern Hills Christian Church SD | — | NS277092 | 2024-06-17 | Dissolved | Spearfish |
| Northern Hills Christian Homeschoolers | — | NS050036 | 2016-07-11 | Active | Sturgis |
| NORTHERN HILLS CHRISTIAN MINISTRIES, INC. | — | NS008070 | 1985-03-28 | Dissolved | — |
| NORTHERN HILLS CHURCH OF CHRIST | — | CH002936 | 1973-12-21 | Active | Spearfish |
| Northern Hills Cinema, LLC | — | DL310774 | 2025-10-03 | Active | Spearfish |
| Northern Hills Cleaning Services, LLC | — | DL244226 | 2023-02-11 | Suspended | Spearfish |
| NORTHERN HILLS COLLECTIONS INC. | — | DB036144 | 1995-08-14 | Active | SPEARFISH |
| NORTHERN HILLS COLLECTIVE LLC | — | DL230755 | 2022-07-18 | Active | STURGIS |
| NORTHERN HILLS COMPUTER WORKS, LLP | — | DR000541 | 2001-03-16 | Inactive | — |
| Northern Hills Construction LLC | — | DL206493 | 2021-07-14 | Active | Spearfish |
| Northern Hills Consulting LLC | — | DL310491 | 2025-09-30 | Active | Brandon |
| NORTHERN HILLS CORVETTE CLUB | — | NS008773 | 1988-07-13 | Inactive | — |
| Northern Hills Counseling Associates, LLC | — | DL205455 | 2021-06-28 | Active | Spearfish |
| Northern Hills Counseling L.L.C. | — | DL036183 | 2013-12-02 | Inactive | SPEARFISH |
| NORTHERN HILLS CREDIT BUREAU, INC. | — | DB009563 | 1969-03-14 | Inactive | — |
| NORTHERN HILLS DEVELOPMENT, L.L.C. | — | DL008137 | 2004-11-01 | Inactive | SPEARFISH |
| Northern Hills Diesel LLC | — | DL049161 | 2016-07-07 | Active | SPEARFISH |
| NORTHERN HILLS DIESEL SERVICE, INC. | — | DB022346 | 1983-04-27 | Inactive | — |
| NORTHERN HILLS DOOR LLC. | — | DL023313 | 2010-12-27 | Active | SPEARFISH |
| Northern Hills Dumpster Rentals LLC | — | DL263874 | 2023-12-06 | Active | Belle Fourche |
| NORTHERN HILLS ELECTRIC, L.L.C. | — | DL008094 | 2004-10-22 | Dissolved | — |
| NORTHERN HILLS ELECTRIC, LLC | — | DL020894 | 2010-03-01 | Active | STURGIS |
| NORTHERN HILLS EPILEPSY CHAPTER, INC. | — | NS006600 | 1978-10-23 | Dissolved | — |
| Northern Hills Equipment & Supply Inc. | — | DB278155 | 2024-07-03 | Active | Lead |
| Northern Hills Excavation LLC | — | DL225869 | 2022-04-27 | Suspended | Whitewood |
| Northern Hills Exotic & Supply LLC | — | DL287626 | 2024-11-22 | Dissolved | Spearfish |
| NORTHERN HILLS EXPANSION INC. | — | DB029144 | 1990-02-07 | Dissolved | — |
| Northern Hills Exteriors, LLC | — | DL170964 | 2019-10-01 | Dissolved | Spearfish |
| NORTHERN HILLS EYE CARE, PROF. L.L.C. | — | DL005036 | 2002-09-03 | Active | STURGIS |
| NORTHERN HILLS FAMILY RECREATION CENTER CORPORATION | — | NS006878 | 1980-02-21 | Active | LEAD |
| NORTHERN HILLS FLOORING, LLC | — | DL012274 | 2006-10-12 | Inactive | — |
| NORTHERN HILLS FOREST PRODUCTS, INCORPORATED | — | DB009840 | 1969-10-06 | Dissolved | — |
| Northern Hills Golf Cars LLC | — | FL225304 | 2022-05-02 | Active | Spearfish |
| Northern Hills Green Steam LLC | — | DL186659 | 2020-09-21 | Dissolved | Whitewood |
| NORTHERN HILLS GROWTH PROPERTIES CO. | — | DB028158 | 1989-02-27 | Dissolved | — |
| NORTHERN HILLS GYMNASTICS TRAINING CENTER, INC. | — | DB029459 | 1990-05-04 | Inactive | — |
| Northern Hills Gymnastics, LLC | — | DL151010 | 2018-07-12 | Active | Sturgis |
| Northern Hills Handyman LLC | — | DL194560 | 2021-01-12 | Dissolved | Spearfish |
| Northern Hills Havoc | — | NS174402 | 2019-12-16 | Dissolved | SPEARFISH |
| NORTHERN HILLS HEARING AID CENTER, INC. | — | DB054954 | 2009-12-07 | Dissolved | SPEARFISH |
| NORTHERN HILLS HOME INSPECTIONS LLC | — | DL017567 | 2008-10-22 | Dissolved | STURGIS |
| Northern Hills Home Repair LLC | — | DL263103 | 2023-11-23 | Dissolved | Spearfish |
| NORTHERN HILLS HOMES, INC. | — | DB002356 | 1961-07-10 | Dissolved | — |
| NORTHERN HILLS HOSPICE, INC. | — | NS008647 | 1987-12-23 | Inactive | — |
| NORTHERN HILLS HOSPITALITY, LLC | — | DL016986 | 2008-07-21 | Active | SPEARFISH |
| NORTHERN HILLS HUMANE SOCIETY, INC. | — | NS007341 | 1982-03-18 | Inactive | — |
| NORTHERN HILLS INDUSTRIAL PARK, L.L.C. | — | DL028115 | 2012-05-07 | Inactive | Spearfish |
| Northern Hills Industries LLP | — | DR281856 | 2024-08-26 | Active | SPEARFISH |
| NORTHERN HILLS INSURANCE, A LIMITED LIABILITY COMPANY | — | DL000852 | 1996-06-06 | Inactive | — |
| Northern Hills Lawn Care LLC | — | DL326700 | 2026-04-22 | Active | Spearfish |
| NORTHERN HILLS LODGING, INC. | — | DB036415 | 1995-11-09 | Dissolved | RAPID CITY |
| NORTHERN HILLS MAINTENANCE, LLC | — | DL021233 | 2010-04-12 | Dissolved | SPEARFISH |
| NORTHERN HILLS MANAGEMENT SERVICES, L.L.C. | — | DL008505 | 2005-01-14 | Dissolved | — |
| NORTHERN HILLS MEDICAL ASSOCIATES, INC. | — | DB031161 | 1991-12-05 | Inactive | — |
| NORTHERN HILLS MOTOCROSS ASSOCIATION, LLC | — | DL010121 | 2005-11-07 | Inactive | — |
| NORTHERN HILLS MUSIC CENTRE, INCORPORATED | — | DB012707 | 1975-01-16 | Dissolved | — |
| Northern Hills Networking | — | NS310647 | 2025-10-02 | Active | Spearfish |
| Northern Hills Nutrition and Dietetics, LLC | — | DL227208 | 2022-05-17 | Suspended | Spearfish |
| Northern Hills Outpost LLC | — | DL232998 | 2022-08-20 | Active | Sturgis |
| Northern Hills Paint and Supplies LLC | — | DL167339 | 2019-07-15 | Active | Spearfish |
| NORTHERN HILLS PATRIOTS | — | NS014347 | 2010-06-16 | Dissolved | — |
| NORTHERN HILLS PIZZA, INC. | — | DB037044 | 1996-04-05 | Inactive | — |
| NORTHERN HILLS PRECISION AMMUNITION, LLC | — | DL032248 | 2013-04-29 | Inactive | Rapid City |
| Northern Hills Programming LLC | — | DL185750 | 2020-08-09 | Inactive | Lead |
| Northern Hills Prospectors | — | NS049893 | 2016-02-04 | Active | Rapid City |
| Northern Hills Psychological Services, LLC | — | DL132569 | 2017-04-17 | Inactive | Spearfish |
| NORTHERN HILLS R/C FLYERS | — | NS012276 | 2003-04-03 | Dissolved | BELLE FOURCHE |
| NORTHERN HILLS RALLY PARK, INC. | — | DB029213 | 1990-03-01 | Dissolved | — |
| NORTHERN HILLS RANCH & RECREATION, INC. | — | DB050843 | 2006-03-15 | Inactive | — |
| Northern Hills Recreation Association | — | NS049263 | 2014-03-11 | Active | Lead |
| NORTHERN HILLS REGIONAL RAILROAD AUTHORITY | — | RA000011 | 1994-12-07 | Active | — |
| NORTHERN HILLS RENTAL MANAGEMENT, LLC | — | DL024590 | 2011-05-05 | Active | SPEARFISH |
| NORTHERN HILLS RENTALS, L.L.C. | — | DL006490 | 2003-11-07 | Inactive | — |
| Northern Hills Rodeo, Inc. | — | NS136312 | 2017-08-24 | Active | SPEARFISH |
| NORTHERN HILLS SANITATION AND SERVICES, INC. | — | DB030268 | 1991-02-11 | Inactive | — |
| NORTHERN HILLS SANITATION, INC. | — | DB012578 | 1974-10-28 | Inactive | — |
| Northern hills scrap metal and recycling L.L.C. | — | DL229316 | 2022-06-22 | Active | Belle Fourche |
| Northern Hills Sewer & Drain, LLC | — | DL135565 | 2017-08-01 | Inactive | SPEARFISH |
| Northern Hills Shadows, LLC | — | DL310868 | 2025-10-06 | Active | Spearfish |
| Northern Hills Shooting Sports | — | NS219614 | 2022-01-31 | Active | Belle Fourche |
| Northern Hills Siding, Inc. | — | DB059526 | 2014-11-03 | Dissolved | Whitewood |
| NORTHERN HILLS SNOWMOBILE RENTALS, INC. | — | DB029995 | 1990-11-26 | Inactive | — |
| NORTHERN HILLS SOCCER ASSOCIATION, INC. | — | NS007322 | 1982-02-04 | Inactive | — |
| NORTHERN HILLS SOD FARM, LLC | — | DL008736 | 2005-02-24 | Active | WHITEWOOD |
| Northern Hills Sources of Support | — | NS134872 | 2017-07-07 | Active | Spearfish |
| NORTHERN HILLS SOUTHERN BAPTIST CHURCH, INC. | — | CH003167 | 1984-05-04 | Inactive | — |
| Northern Hills Spas LLC | — | DL198637 | 2021-03-16 | Active | Spearfish |
| NORTHERN HILLS SUBS, INC. | — | DB047100 | 2003-07-11 | Inactive | SPEARFISH |
| Northern Hills Taxi LLC | — | DL286359 | 2024-11-04 | Active | Lead |
| NORTHERN HILLS TOBACCO AND SUPPLIES, LLC | — | DL038184 | 2014-04-02 | Dissolved | RAPID CITY |
| Northern Hills Tool Company, LLC. | — | DL197991 | 2021-03-05 | Dissolved | Sturgis |
| NORTHERN HILLS TRAINING CENTER | Health care and social assistance | NS006435 | 1978-03-03 | Active | SPEARFISH |
| NORTHERN HILLS TRANSPORT, INC. | — | DB025531 | 1986-06-30 | Inactive | — |
| NORTHERN HILLS TRANSPORT, LLC | — | DL011917 | 2006-08-16 | Active | SIOUX FALLS |
| NORTHERN HILLS VENTURES, INC. | — | DB051164 | 2006-05-30 | Active | SPEARFISH |
| Northern Hills Veterans - We've Got Your Six | — | NS333590 | 2026-09-30 | Active | Spearfish |
| NORTHERN HILLS VETERINARY CLINIC, P.C. | — | DB033933 | 1994-01-14 | Active | STURGIS |
| NORTHERN HILLS WASTE MANAGEMENT DISTRICT, INCORPORATED | — | NS010631 | 1996-08-16 | Inactive | — |
| Northern Hills Woodworks LLC | — | DL196428 | 2021-02-10 | Active | Spearfish |
| NORTHERN HILLS YOUTH SERVICES, INC. | — | NS005249 | 1973-02-26 | Inactive | — |
| NORTHERN HILLS, INC. (SPEARFISH) | — | DB020507 | 1981-03-25 | Inactive | — |
| NORTHERN HOLDINGS, L.L.C. | — | DL024773 | 2011-05-24 | Inactive | Ankeny |
| NORTHERN HOSPITALITY, INC. | — | FB018775 | 1996-03-21 | Revoked | MANHATTAN |
| NORTHERN HOSPITALITY, INC. | — | DB027055 | 1988-01-21 | Inactive | — |
| Northern Imaging Solutions, LLC | — | FL044297 | 2016-04-29 | Inactive | COTTAGE GROVE |
| NORTHERN IMPORTS, INC. | — | FB128937 | 2016-12-22 | Active | Fort Worth |
| NORTHERN IMPROVEMENT COMPANY | — | FB008263 | 1982-03-15 | Active | Fargo |
| NORTHERN INDUSTRIAL ERECTORS, INC. | — | FB034918 | 2011-01-24 | Revoked | GRAND RAPIDS |
| NORTHERN INDUSTRIES, LLC | — | DL143083 | 2018-01-25 | Active | SPEARFISH |
| Northern Infrared Co., LLC | — | DL313456 | 2025-11-12 | Active | Huron |
| Northern Innovations LLC | — | DL289019 | 2024-12-15 | Active | BELLE FOURCHE |
| NORTHERN INTERIOR STAFF DEVELOPMENT COUNCIL | — | NS009315 | 1991-01-24 | Inactive | RAPID CITY |
| NORTHERN INVESTMENTS LLC | — | DL031598 | 2013-03-11 | Dissolved | SIOUX FALLS |
| Northern Investments of SD, LLC | — | DL265920 | 2024-01-06 | Active | SPEARFISH |
| Northern Investors Company | — | FB197676 | 2021-03-01 | Active | KENMORE |
| NORTHERN IRRIGATION SYSTEMS, INC. | — | FB015528 | 1992-09-16 | Revoked | FARMINGTON |
| Northern Lakes Family II, LLC | — | DL321372 | 2026-02-20 | Active | Frankfort |
| Northern Lakes Landscape, LLC | — | DL043074 | 2015-04-01 | Active | EDEN |