| BLACK HILLS ANIMAL HOSPITAL, P.A. | DB011462 | 1973-01-09 | Active | RAPID CITY |
| Black Hills Animal Sanctuary, Inc. | NS207508 | 2021-07-30 | Dissolved | Sturgis |
| Black Hills Anthropomorphic Arts | NS310584 | 2025-10-01 | Active | Watertown |
| BLACK HILLS ANTICLINE PARTNERS, L.L.C. | DL004959 | 2002-08-02 | Dissolved | — |
| BLACK HILLS ANTIQUES AND COLLECTIBLES LLC | DL240312 | 2022-12-15 | Inactive | RAPID CITY |
| Black Hills Antlers LLC | DL195710 | 2021-01-30 | Active | Rapid City |
| BLACK HILLS AQUACULTURE INC. | DB032604 | 1993-01-26 | Inactive | — |
| BLACK HILLS AQUACULTURE LLC | DL018398 | 2009-03-03 | Active | HILL CITY |
| Black Hills Aquatic Adventures, LLC | DL049541 | 2016-08-10 | Active | Rapid City |
| BLACK HILLS ARABIAN HORSE ASSOCIATION | NS007162 | 1981-05-12 | Inactive | — |
| BLACK HILLS ARCHERY CLUB | NS013750 | 2008-06-11 | Dissolved | RAPID CITY |
| BLACK HILLS ARCHERY, INC. | DB037956 | 1996-12-13 | Active | RAPID CITY |
| BLACK HILLS AREA BAPTIST ASSOCIATION, SBC | NS007095 | 1981-02-09 | Active | Rapid City |
| BLACK HILLS AREA BEAUTY COLLEGE, INC. | DB029113 | 1990-02-01 | Dissolved | Rapid City |
| Black Hills Area Beekeeping Club | NS187765 | 2020-09-16 | Active | RAPID CITY |
| BLACK HILLS AREA BIKERS, INC. | NS272280 | 2024-04-05 | Active | Rapid City |
| BLACK HILLS AREA COMMUNITY FOUNDATION | NS008456 | 1987-01-21 | Active | Rapid City |
| Black HIlls Area Council, Inc. | NS001226 | 1948-03-06 | Dissolved | RAPID CITY |
| BLACK HILLS AREA GAY AND LESBIAN YOUTH SUPPORT AND RESOURCE CENTER, INC. | NS012271 | 2003-04-01 | Inactive | — |
| BLACK HILLS AREA HABITAT FOR HUMANITY | NS009146 | 1990-04-11 | Active | RAPID CITY |
| Black Hills Area Law Enforcement Chaplain Association | NS326614 | 2026-04-22 | Active | Rapid City |
| BLACK HILLS AREA LUIS PALAU CRUSADE, INC. | NS010810 | 1997-06-30 | Dissolved | — |
| BLACK HILLS AREA MULTI HOUSING ASSOCIATION | NS012315 | 2003-06-05 | Dissolved | RAPID CITY |
| BLACK HILLS AREA WOMAN MAGAZINE, INC. | DB051367 | 2006-07-24 | Dissolved | SIOUX FALLS |
| BLACK HILLS ARENA RACING, LLC | DL007635 | 2004-07-19 | Dissolved | SAINT ONGE |
| BLACK HILLS ART ASSOCIATION | NS007739 | 1962-03-28 | Inactive | — |
| BLACK HILLS ARTHRITIS ASSOCIATION | NS009520 | 1991-11-18 | Dissolved | RAPID CITY |
| Black Hills Artistry Lab, LLC | DL260924 | 2023-10-17 | Dissolved | Rapid City |
| BLACK HILLS ARTS FESTIVAL INC. | DB021054 | 1981-10-16 | Dissolved | — |
| BLACK HILLS ARTS RESOURCE CENTER, INC. | NS010836 | 1997-08-13 | Dissolved | RAPID CITY |
| BLACK HILLS ASPHALT, LLC | DL021247 | 2010-04-14 | Dissolved | SPEARFISH |
| Black HIlls Asset Management, LLC | DL043661 | 2015-06-08 | Active | RAPID CITY |
| BLACK HILLS ASSET PROTECTION GROUP, LLC | DL021451 | 2010-05-10 | Dissolved | Rapid City |
| BLACK HILLS ASSETZ LLC | DL204497 | 2021-06-10 | Dissolved | Rapid City |
| BLACK HILLS ASSOCIATION FOR CHILDREN WITH LEARNING DISABILITIES | NS007096 | 1981-02-10 | Inactive | — |
| BLACK HILLS ASSOCIATION FOR THE EDUCATION OF YOUNG CHILDREN | FN011306 | 2012-04-19 | Inactive | WASHINGTON |
| BLACK HILLS ASSOCIATION OF LAW ENFORCEMENT ATHLETICS | NS011681 | 2001-01-31 | Inactive | — |
| BLACK HILLS ASSOCIATION OF LIFE UNDERWRITERS, INC. OF RAPID CITY, SOUTH DAKOTA | NS000652 | 1963-10-15 | Inactive | — |
| BLACK HILLS ASTRONOMICAL SOCIETY | NS006585 | 1978-09-27 | Active | Rapid City |
| Black Hills ATM's, LLC | DL188089 | 2020-09-22 | Active | Sturgis |
| BLACK HILLS ATM, INC. | DB047672 | 2003-12-22 | Dissolved | RAPID CITY |
| BLACK HILLS AUBURN, LLC | DL310316 | 2025-09-29 | Active | Rapid City |
| BLACK HILLS AUDIO TOURS L.L.C. | DL000513 | 1995-07-26 | Inactive | — |
| Black Hills Audiobooks, LLC | DL134387 | 2017-06-20 | Active | RAPID CITY |
| Black Hills Audiology, LLC | DL258009 | 2023-09-04 | Active | Rapid City |
| BLACK HILLS AUTO AUCTION, INC. | DB044613 | 2001-10-12 | Active | RAPID CITY |
| BLACK HILLS AUTO CARE, LLC | DL030442 | 2012-12-12 | Dissolved | BELLE FOURCHE |
| Black Hills Auto Grooming LLC | DL253043 | 2023-06-17 | Dissolved | Rapid City |
| BLACK HILLS AUTO PARTS LLC | DL015214 | 2007-12-07 | Dissolved | SPEARFISH |
| BLACK HILLS AUTO PARTS, INC. | DB054291 | 2009-02-06 | Dissolved | SPEARFISH |
| BLACK HILLS AUTO RENTAL LLC | DL035229 | 2013-09-27 | Inactive | CUSTER |
| BLACK HILLS AUTO, INC. | DB043918 | 2001-03-19 | Dissolved | RAPID CITY |
| Black Hills AutoMobile LLC | DL252609 | 2023-06-10 | Inactive | Spearfish |
| BLACK HILLS AUTOMOTIVE TECHNICIANS, INC. | DB057738 | 2013-04-22 | Dissolved | RAPID CITY |
| Black Hills Auxiliary, Post 5969, Veteran's of Foreign Wars of the United States | NS010824 | 1997-07-25 | Active | Deadwood |
| BLACK HILLS AVIATION LEASING LLC | DL278119 | 2024-07-02 | Active | RAPID CITY |
| BLACK HILLS AVIATION LLC | DL278115 | 2024-07-02 | Dissolved | RAPID CITY |
| BLACK HILLS AVIATION, INC. | DB033214 | 1993-07-08 | Dissolved | RAPID CITY |
| BLACK HILLS AVIATION, INC. | DB022820 | 1983-10-21 | Inactive | — |
| Black Hills Aviation, L.L.C. | DL315475 | 2025-12-10 | Active | Rapid City |
| Black Hills Aviation, LLC | DL045527 | 2015-10-19 | Dissolved | RAPID CITY |
| Black Hills Baby Bum Rentals, LLC | DL274133 | 2024-05-02 | Dissolved | Spearfish |
| Black HIlls Baby Gear, L.L.C. | DL047690 | 2016-03-23 | Dissolved | RAPID CITY |
| Black Hills Back 40 LLC | DL036807 | 2014-01-06 | Active | RAPID CITY |
| BLACK HILLS BACK COUNTRY ADVENTURES, INC. | DB057345 | 2012-12-10 | Dissolved | BELLE FOURCHE |
| BLACK HILLS BACK COUNTRY HORSEMEN OF SOUTH DAKOTA | NS014259 | 2010-03-08 | Active | Whitewood |
| Black Hills Backhoe Service L.L.C. | DL046146 | 2015-12-10 | Active | CUSTER |
| BLACK HILLS BADGES FOR HOPE, INC. | NS147410 | 2018-04-26 | Active | Rapid City |
| BLACK HILLS BAGELS, INC. | DB036280 | 1995-09-22 | Inactive | — |
| BLACK HILLS BAGGING, INC. | DB025419 | 1986-05-23 | Inactive | — |
| Black Hills Bail Bonds LLC | DL043012 | 2015-03-27 | Dissolved | STURGIS |
| Black Hills Balance, L.L.C. | DL284204 | 2024-10-01 | Active | Rapid City |
| Black Hills Ballistix Softball | NS284756 | 2024-10-08 | Active | Rapid City |
| Black Hills Balloon Bliss LLC | DL296743 | 2025-03-29 | Active | Box Elder |
| BLACK HILLS BALLOON RALLY, INC. | NS008150 | 1985-07-15 | Inactive | — |
| BLACK HILLS BALLOONS, INC. | DB026024 | 1987-01-13 | Dissolved | CUSTER |
| Black Hills Bandits, Inc. | DB145662 | 2018-03-22 | Dissolved | Rapid City |
| BLACK HILLS BAPTIST CHURCH, SBC | CH003143 | 1983-11-29 | Active | WHITEWOOD |
| Black Hills Barbell LLC | DL174687 | 2019-12-20 | Active | Rapid City |
| Black Hills Barber Company LLC | DL268017 | 2024-02-07 | Dissolved | Spearfish |
| Black Hills Barbershop, LLC | DL155183 | 2018-10-17 | Active | Rapid City |
| BLACK HILLS BARES LLC | DL039757 | 2014-07-31 | Inactive | CUSTER |
| Black Hills Bark Avenue, LLC | DL212063 | 2021-10-12 | Active | Rapid City |
| Black Hills Barn & Postframe, Inc. | DB146759 | 2018-04-11 | Dissolved | STURGIS |
| Black Hills Barn & Timber Works Inc. | DB060860 | 2016-05-04 | Dissolved | RAPID CITY |
| Black Hills Barndo LLC | DL272968 | 2024-04-16 | Suspended | Rapid City |
| Black Hills Barnwood Creations LLC | DL050369 | 2016-10-20 | Dissolved | Rapid City |
| Black Hills Barre, LLC | DL151297 | 2018-07-19 | Dissolved | Rapid City |
| Black Hills Barrels LLC | DL176351 | 2020-01-24 | Active | Sturgis |
| Black Hills Baseball Barn LLC | DL251105 | 2023-05-18 | Dissolved | Box Elder |
| Black Hills Baseball, LLC | DL318891 | 2026-01-23 | Active | Spearfish |
| Black Hills Basecamp, LLC | DL169993 | 2019-09-10 | Active | Rapid City |
| BLACK HILLS BASKETBALL, L.L.C. | DL001330 | 1997-08-11 | Inactive | ST PAUL |
| Black Hills Bass, LLC | DL260196 | 2023-10-05 | Active | Rapid City |
| BLACK HILLS BAT COMPANY, INC. | DB054163 | 2008-12-29 | Dissolved | RAPID CITY |
| BLACK HILLS BATTERY SYSTEMS, INC. | DB028048 | 1989-01-16 | Inactive | — |
| Black Hills Battle Zone LLC | DL148650 | 2018-05-23 | Dissolved | Rapid City |
| BLACK HILLS BBQ COMPANY L.L.P. | DR001034 | 2006-09-19 | Revoked | — |
| BLACK HILLS BBQ, INC. | FB034756 | 2010-11-08 | Inactive | Billings |
| Black Hills Bean Counters LLC | DL330299 | 2026-06-03 | Active | Whitewood |
| Black Hills Bear Tactical LLC | DL307459 | 2025-08-21 | Active | Box Elder |
| BLACK HILLS BEAU JO'S LLC | DL019937 | 2009-10-14 | Dissolved | PIEDMONT |
| Black Hills Beauty, LLC | DL208290 | 2021-08-13 | Dissolved | Spearfish |
| Black Hills Bed and Breakfasts | NS049676 | 2015-05-28 | Dissolved | CUSTER |
| Black Hills Beef Company, L.L.C. | DL147935 | 2018-05-07 | Active | SPEARFISH |
| BLACK HILLS BEEF, LLC | DL035317 | 2013-10-02 | Dissolved | RAPID CITY |
| BLACK HILLS BEER, LLC | DL026165 | 2011-11-07 | Dissolved | RAPID CITY |
| Black Hills Behavior, LLC | DL150307 | 2018-06-26 | Active | Rapid City |
| BLACK HILLS BENEFIT LIFE ASSOCIATION | IN000007 | 1932-10-05 | Active | — |
| Black Hills Bespoke Woodshop LLC | DL204087 | 2021-06-03 | Dissolved | Rapid City |
| Black Hills Best LLC | DL130164 | 2017-01-31 | Dissolved | Rapid City |
| Black Hills Bettys LLC | DL039986 | 2014-08-18 | Dissolved | BLACK HAWK |
| BLACK HILLS BIBLE CAMP FOUNDATION | NS012657 | 2004-09-29 | Active | Spearfish |
| BLACK HILLS BIBLE CAMP, INC. | NS004974 | 1971-08-04 | Active | Spearfish |
| BLACK HILLS BIBLE CHURCH | CH003497 | 2003-05-20 | Inactive | — |
| BLACK HILLS BIBLE CHURCH | CH009398 | 2013-09-16 | Dissolved | Oral |
| BLACK HILLS BICYCLES L.L.P. | DR001285 | 2009-08-20 | Dissolved | RAPID CITY |
| BLACK HILLS BICYCLES, INC. | DB025524 | 1986-06-26 | Inactive | — |
| Black Hills Bigger Faster Stronger, LLC | DL324205 | 2026-03-24 | Active | Rapid City |
| Black Hills Bike Hub | NS293597 | 2025-02-14 | Active | RAPID CITY |
| Black Hills Bike Share, LLC | DL194145 | 2021-01-05 | Active | BELLE FOURCHE |
| Black Hills Bike Week Rendezvous LLC | DL199630 | 2021-03-27 | Inactive | Keystone |
| Black Hills Bin Blasters LLC | DL332255 | 2026-06-29 | Active | Watertown |
| BLACK HILLS BIODIESEL, LLC | DL015085 | 2007-11-16 | Inactive | — |
| BLACK HILLS BIOLOGICS CONSULTING, LLC | DL025846 | 2011-09-28 | Inactive | RAPID CITY |
| BLACK HILLS BIRD COMPANY, INC. | DB030358 | 1991-03-05 | Dissolved | — |
| Black Hills Birth Network, Inc. | NS137810 | 2017-10-02 | Dissolved | Rapid City |
| BLACK HILLS BISON COMPANY INC. | DB041682 | 1999-07-27 | Dissolved | — |
| BLACK HILLS BISON COMPANY LLP | DR000568 | 2001-07-31 | Revoked | RAPID CITY |
| BLACK HILLS BISTRO LLC | DL211552 | 2021-10-04 | Inactive | HILL CITY |
| Black Hills BizNet Inc. | NS134717 | 2017-06-30 | Dissolved | RAPID CITY |
| BLACK HILLS BIZNET, LLC | DL029822 | 2012-10-26 | Dissolved | RAPID CITY |
| Black Hills Black Car Inc. | DB272017 | 2024-04-02 | Dissolved | Rapid City |
| Black Hills BlackTop Solutions LLC | DL191862 | 2020-11-25 | Active | Rapid City |
| BLACK HILLS BLASTING, INC. | DB032553 | 1993-01-13 | Inactive | — |
| BLACK HILLS BLEND INC. | DB033674 | 1993-12-02 | Dissolved | RAPID CITY |
| Black Hills Blinds, LLC | DL049199 | 2016-07-11 | Dissolved | SPEARFISH |
| Black Hills Blockchain, LLC | DL218712 | 2022-01-18 | Dissolved | Spearfish |
| Black Hills Blooms LLC | DL332917 | 2026-07-06 | Active | Rapid City |
| Black Hills Blue Pine Designs, Inc. | DB051385 | 2006-07-28 | Dissolved | CUSTER |
| BLACK HILLS BLUEGRASS ASSOCIATION | NS014147 | 2009-10-08 | Active | Rapid City |
| BLACK HILLS BLUES SOCIETY, INC. | NS012333 | 2003-07-02 | Dissolved | Black Hawk |
| BLACK HILLS BMW STAMPEDE LLC | DL010945 | 2006-03-22 | Inactive | — |
| BLACK HILLS BMX | NS011118 | 1998-10-23 | Dissolved | RAPID CITY |
| Black Hills BnB Service, LLC | DL321981 | 2026-03-02 | Active | Sturgis |
| BLACK HILLS BOARD OF REALTORS, INC. | NS006744 | 1979-06-20 | Active | RAPID CITY |
| Black Hills Boat & Buggy Storage LLC | DL199208 | 2021-03-23 | Dissolved | Rapid City |
| Black Hills Boba LLC | DL270152 | 2024-03-07 | Inactive | Rapid City |
| Black Hills Body & Fender Llc | DL201871 | 2021-04-28 | Dissolved | Custer |
| Black Hills Bodybuilding LLC | DL267754 | 2024-02-02 | Active | Black Hawk |
| Black Hills Bodywork L.L.C. | DL312915 | 2025-11-04 | Active | Rapid City |
| Black Hills Bombers Baseball | NS313233 | 2025-11-10 | Active | Rapid City |
| BLACK HILLS BOOKKEEPING, INC. | DB048114 | 2004-04-07 | Dissolved | ST ONGE |
| Black Hills Borders LLC | DL199995 | 2021-04-01 | Dissolved | Rapid City |
| Black Hills Bound Investments, LLC | DL318282 | 2026-01-16 | Active | Watertown |
| Black Hills Branding Company, LLC | DL242906 | 2023-01-25 | Dissolved | Rapid City |
| Black Hills Brawns & Lawns LLC | DL227033 | 2022-05-15 | Inactive | Spearfish |
| BLACK HILLS BRAZILIAN JIU-JITSU, L.L.C. | DL027544 | 2012-03-15 | Dissolved | RAPID CITY |
| BLACK HILLS BREW PUB, INC. | DB041299 | 1999-04-14 | Inactive | — |
| Black Hills Brewery Inc | DB258925 | 2023-09-18 | Dissolved | Rapid City |
| BLACK HILLS BREWING COMPANY, INC. | DB032510 | 1993-01-05 | Inactive | — |
| BLACK HILLS BREWING INCORPORATED | DB026862 | 1987-11-04 | Dissolved | — |
| BLACK HILLS BREWING, LLC | DL013141 | 2007-02-05 | Active | SPEARFISH |
| BLACK HILLS BRICK OVEN PIZZA, LLC | DL032767 | 2013-06-10 | Suspended | SPEARFISH |
| Black Hills Broadband LLC | DL196246 | 2021-02-07 | Active | Rapid City |
| Black Hills Broadcasting, L.L.C. | DL131291 | 2017-03-06 | Active | SUMMERSET |
| BLACK HILLS BROADCASTING, L.L.C. | DL000732 | 1996-02-26 | Inactive | — |
| Black Hills Broadheads LLC | DL238257 | 2022-11-09 | Active | Rapid City |
| Black Hills Brokers Realty, LLC | DL191073 | 2021-01-30 | Active | Custer |
| Black Hills Bronco Adventures LLC | DL275319 | 2024-05-20 | Suspended | CUSTER |
| BLACK HILLS BRONZE, INC. | DB050660 | 2006-01-31 | Dissolved | HILL CITY |
| Black Hills Brows LLC | DL226669 | 2022-05-09 | Active | Rapid City |
| BLACK HILLS BRUISEHERZ ROLLER DERBY LEAGUE | NS014323 | 2010-05-18 | Dissolved | — |
| Black Hills Bud Dispensaries LLC | DL213307 | 2021-10-28 | Dissolved | Belle Fourche |
| Black Hills Bud, LLC | DL188885 | 2020-10-05 | Dissolved | BELLE FOURCHE |
| Black Hills Buds L.L.C | DL191070 | 2020-11-11 | Dissolved | Spearfish |
| BLACK HILLS BUFFALO PET PRODUCTS, INC. | DB048618 | 2004-08-10 | Dissolved | — |
| BLACK HILLS BUFFALO, L.L.C. | DL002852 | 2000-03-15 | Inactive | RAPID CITY |
| Black Hills Buggies, LLC | DL214775 | 2021-11-18 | Dissolved | Caputa |
| Black Hills Builder, LLC | DL037639 | 2014-02-28 | Dissolved | SIOUX FALLS |
| BLACK HILLS BUILDERS SUPPLY, INC. | DB033985 | 1994-01-28 | Dissolved | RAPID CITY |
| BLACK HILLS BUILDERS, INC. | DB042242 | 1999-12-30 | Active | SPEARFISH |
| Black HIlls Building and Restoration LLC | DL038048 | 2014-03-28 | Inactive | PRINGLE |
| Black Hills Building Materials LLC | DL322389 | 2026-03-03 | Active | Rapid City |
| BLACK HILLS BUILDINGS, LLC | DL241701 | 2023-01-08 | Dissolved | BLACK HAWK |
| BLACK HILLS BUILDINGS, LLC | DL322931 | 2026-03-10 | Active | RAPID CITY |
| Black Hills Builds LLC | DL231477 | 2022-07-27 | Active | WHITEWOOD |
| Black Hills Bujin Ki Ryu JuJitsu Honbu, LLC | DL041983 | 2015-01-20 | Active | RAPID CITY |
| Black Hills Bulk Foods LLC | DL194075 | 2021-01-05 | Dissolved | HOT SPRINGS |
| Black Hills Bullies ASSOCIATION | DB201204 | 2021-04-19 | Active | Rapid City |
| Black Hills Bullies LLC | DL307829 | 2021-04-19 | Active | RAPID CITY |
| BLACK HILLS BURGER AND BUN COMPANY, INC. | DB056856 | 2012-04-30 | Active | custer |
| Black Hills Burl and Beam, LLC | DL308178 | 2025-08-30 | Active | — |
| Black Hills Burrito CO. LLC | DL221259 | 2022-02-22 | Suspended | Rapid CIty |
| BLACK HILLS BUS LINES, INC. | DB031187 | 1991-12-12 | Inactive | — |
| Black Hills Business and Financial Services, LLC | DL266013 | 2024-01-08 | Active | Vale |
| Black Hills Business Group Inc. | DB246621 | 2023-03-16 | Dissolved | Granbury |
| Black Hills Business Results LLC | DL221145 | 2022-02-21 | Active | Rapid City |
| BLACK HILLS BUSINESS SOLUTIONS, INC. | DB055869 | 2011-01-20 | Dissolved | LEAD |
| Black Hills Business Solutions, LLC | DL157152 | 2018-12-05 | Active | Rapid City |