| IRON MOUNTAIN RIDGE, L.L.C. | DL026725 | 2011-12-30 | Inactive | RAPID CITY |
| IRON MOUNTAIN SECURE SHREDDING, INC. | FB036803 | 2013-06-03 | Active | Royersford |
| IRON MOUNTAIN TRADING COMPANY, LLC | DL009542 | 2005-07-15 | Inactive | Wayzata |
| IRON MOUNTAIN TRADING POST LLC | DL129531 | 2017-01-09 | Active | KEYSTONE |
| IRON MOUNTAIN TRANSPORT LLC | DL305457 | 2025-07-24 | Active | RAPID CITY |
| Iron Mountain Woodworks, LLC | DL190846 | 2020-11-06 | Dissolved | Rapid City |
| Iron Mule Express LLC | DL235160 | 2022-09-21 | Active | Hudson |
| IRON NATION WOOD CRAFTERS, LLC | DL006831 | 2004-01-21 | Inactive | — |
| Iron Oak Consulting, LLC | DL246838 | 2023-03-21 | Inactive | Pierre |
| Iron Oak Unlimited LLC | DL332771 | 2026-07-04 | Active | Hill City |
| Iron Outfitter HR LLC | DL141065 | 2017-12-14 | Active | Rapid City |
| Iron Outfitter, LLC | DL303232 | 2013-01-07 | Active | BLACK HAWK |
| Iron Outlaws LLC | DL308999 | 2025-09-10 | Active | MILBANK |
| Iron Ox Networks LLC | DL238456 | 2022-11-11 | Active | Sioux Falls |
| Iron Paws LLC | DL327571 | 2026-04-30 | Active | RAPID CITY |
| Iron Peak Construction LLC | DL330149 | 2026-06-01 | Active | Sioux Falls |
| Iron PHNX, LLC | DL185685 | 2020-08-06 | Dissolved | Rapid CIty |
| Iron Phoenix Body Tempering LLC | DL293863 | 2025-02-23 | Active | Sioux Falls |
| Iron Pine Specialty, Inc. | FB318757 | 2026-01-22 | Active | Cedar City |
| IRON PINE STUDIOS LLC | DL305532 | 2025-07-25 | Active | BROOKINGS |
| Iron Pines Services LLC | DL312234 | 2025-10-25 | Active | Hermosa |
| Iron Plains Cattle Company LLC | DL233532 | 2022-08-28 | Dissolved | New Underwood |
| IRON PLAINS INCORPORATED | DB028191 | 1989-03-09 | Dissolved | — |
| Iron Plume Ranch, LLC | DL251865 | 2023-05-30 | Suspended | Porcupine |
| IRON PLUME, INC. | DB021446 | 1982-04-19 | Inactive | — |
| IRON POST, LLC | DL015459 | 2008-01-02 | Active | SIOUX FALLS |
| IRON POWER, INC. | DB035606 | 1995-03-27 | Inactive | — |
| Iron Rail, LLC | DL243681 | 2023-02-03 | Active | Sioux Falls |
| Iron Ranch Manufacturing & Welding, LLC | DL241494 | 2023-01-04 | Active | Watertown |
| Iron Range MP, LLC | DL209781 | 2021-09-08 | Active | Aberdeen |
| IRON RIDGE CONSTRUCTION, INC. | DB327936 | 2026-05-05 | Active | Rapid City |
| Iron Ridge Land Services LLC | DL326669 | 2026-04-22 | Active | Watertown |
| IRON RIDGE PROPERTIES, L.L.C. | DL005962 | 2003-06-13 | Active | SPEARFISH |
| Iron Ridge Solutions LLC | DL330093 | 2026-06-01 | Active | SIOUX FALLS |
| Iron River Earthmoving company LLC | DL214033 | 2021-11-08 | Active | marion |
| Iron River Properties LLC | DL133466 | 2017-05-16 | Dissolved | Rapid City |
| IRON RIVER RETRIEVERS, LLC | DL225408 | 2022-04-21 | Inactive | Hitchcock |
| IRON ROAD GALLERY AND TRADING POST, LLC | DL008613 | 2005-02-02 | Inactive | — |
| Iron Sharpens Iron Enterprises, LLC | DL038497 | 2014-04-25 | Inactive | BROOKINGS |
| Iron Sharpens Iron Sports LLC | DL277195 | 2024-06-18 | Active | Rapid City |
| IRON SHIELD INDUSTRIES, LLC | DL030054 | 2012-11-15 | Active | GARDEN CITY |
| IRON SHIELD, INCORPORATED | DB049769 | 2005-05-26 | Dissolved | ABERDEEN |
| Iron Smiles Productions & Technologies LLC | DL189310 | 2020-10-14 | Active | Emery |
| Iron Stella Personal Training, LLC | DL327908 | 2026-05-05 | Active | Box Elder |
| Iron Therapy L.L.C. | DL286170 | 2024-10-31 | Active | Sturgis |
| Iron Trail Company LLC | DL322768 | 2026-03-09 | Active | Watertown |
| IRON TRAILS WEST RAILROAD MUSEUM | NS007327 | 1982-02-19 | Dissolved | RAPID CITY |
| Iron Turbo LLC | DL270150 | 2024-03-07 | Revoked | WATERTOWN |
| Iron Twin Enterprises LLC | DL317218 | 2026-01-05 | Active | Madison |
| Iron Warrior Academy | NS198274 | 2021-03-08 | Active | WEBSTER |
| Iron Warrior LLC | DL159698 | 2019-01-30 | Active | Webster |
| Iron Warrior Properties LLC | DL188595 | 2020-10-01 | Active | Webster |
| Iron Water Holdings, LLC | DL319658 | 2026-02-02 | Active | Sioux Falls |
| Iron Waypoint LLC | DL306774 | 2025-08-11 | Active | Spearfish |
| IRON WHEEL HEATING, COOLING & PLUMBING LLC | DL277334 | 2024-06-19 | Active | SALEM |
| IRON WHEEL SALES & SERVICE, INC. | DB027483 | 1988-06-17 | Active | SALEM |
| IRON WILL CAPITAL LLC | DL289450 | 2024-12-20 | Inactive | Sioux Falls |
| IRON WOOD RENTALS LLC | DL307898 | 2025-08-27 | Active | SIOUX FALLS |
| Iron Woodshed Online, LLC | DL045652 | 2015-10-28 | Inactive | BOX ELDER |
| Iron Wool Ranch LLC | DL326512 | 2026-04-20 | Active | hudson |
| Iron Works Gym LLC | DL239694 | 2022-12-04 | Dissolved | Riverton |
| Iron24 River Ridge, LLC | DL305594 | 2025-07-25 | Active | Lakeland |
| Iron24, LLC | DL305743 | 2025-07-28 | Active | Lakeland |
| Ironback Operations, LLC | DL302112 | 2025-06-09 | Active | Sioux Falls |
| Ironblade Scrap Recycling LLC | DL329513 | 2026-05-22 | Active | Garretson |
| IRONCLAD CONSTRUCTION, LLC | DL019807 | 2009-09-23 | Active | BERESFORD |
| Ironclad Dumpster Services LLC | DL299133 | 2025-04-30 | Suspended | Rapid City |
| IRONCLAD ENVIRONMENTAL SOLUTIONS, INC. | FB254259 | 2023-07-07 | Active | Houston |
| Ironclad Gaming LLC | DL333788 | 2026-07-15 | Active | Yankton |
| Ironclad Holdings LLC | DL312700 | 2025-10-31 | Active | Yankton |
| Ironclad Life Insurance LLC | DL182755 | 2020-06-09 | Active | Rapid City |
| Ironclad Shipping L.L.C | DL284019 | 2024-09-27 | Active | Rapid City |
| IroncladConsulting LLC | DL317549 | 2026-01-08 | Active | Rapid City |
| IronEdge Holdings, LLC | DL318062 | 2026-01-14 | Active | Cheyenne |
| Ironfall Enterprises, Inc. | DB318071 | 2026-01-14 | Active | Cheyenne |
| Ironforge Digital Ventures LLC | DL328565 | 2026-05-12 | Active | Sioux Falls |
| IronFox Farm | NS207693 | 2021-08-04 | Active | SIOUX FALLS |
| IRONGATE HOME FINANCE, LLC | FL042874 | 2014-08-07 | Revoked | CHARLOTTE |
| IRONHAWK INDUSTRIAL DISTRIBUTION LLC | FL042104 | 2013-10-25 | Revoked | MARLTON |
| IronHorse Construction LLC | DL281502 | 2024-08-21 | Dissolved | Rapid City |
| Ironhorse Funding LLC | FL200485 | 2021-04-08 | Active | Beverly |
| Ironhorse Land Company LLC | FL307160 | 2025-08-15 | Active | Gothenburg |
| Ironhorse Originals - Sioux Falls, LLC | DL040960 | 2014-11-03 | Dissolved | SIOUX FALLS |
| IRONIQUE, LLC | DL011494 | 2006-06-07 | Inactive | — |
| Ironman Casting and Machining Solutions LLC | DL183711 | 2020-06-26 | Active | GRENVILLE |
| Ironman Enterprises LLC | DL048348 | 2016-05-05 | Active | Rapid City |
| Ironmansucks LLC | DL289747 | 2024-12-27 | Dissolved | Valley Springs |
| IronMaster Innovations LLC | DL134244 | 2017-06-15 | Inactive | Webster |
| IRONOUTFITTER INC. | DB057414 | 2013-01-07 | Active | Black Hawk |
| IronPath LLC | DL303830 | 2025-07-03 | Active | Watertown |
| Ironpeak Mid-Atlantic, Inc. | FB037878 | 2014-06-17 | Active | ALLEGANY |
| Ironpeak Midwest, Inc. | FB038132 | 2014-09-26 | Active | ALLEGANY |
| IRONPEAK NORTHEAST, INC. | FB038129 | 2014-09-26 | Active | ALLEGANY |
| IRONPEAK SERVICES CORP. | FB028166 | 2004-01-26 | Active | ALLEGANY |
| IRONPEAK SOUTH, INC. | FB038128 | 2014-09-26 | Active | ALLEGANY |
| IRONPEAK SOUTHWEST, INC. | FB038130 | 2014-09-26 | Active | ALLEGANY |
| IRONPEAK, INC. | FB028892 | 2004-09-03 | Active | ALLEGANY |
| IronRange Golf Performance LLC | DL302307 | 2025-06-11 | Active | Watertown |
| Ironridge LLC | DL311223 | 2025-10-10 | Active | Mitchell |
| Ironroot Forestry LLC | DL303289 | 2025-06-30 | Active | Custer |
| IRONSHORE INSURANCE SERVICES LLC | FL003758 | 2007-10-05 | Active | NEW YORK |
| Ironsides, L.L.C. | FL158142 | 2018-12-28 | Inactive | Hutchinson |
| Ironstone Asset Holdings Inc | DB322712 | 2026-03-08 | Active | Watertown |
| Ironstone Capital, LLC | DL309832 | 2025-09-22 | Active | Paramus |
| IRONTON TELEPHONE COMPANY | FB036578 | 2013-02-19 | Inactive | COPLAY |
| IRONVEK CO | DB328090 | 2026-05-06 | Active | Watertown |
| Ironwood 6 Flats, LLC | DL253082 | 2023-06-19 | Active | Sioux Center |
| IRONWOOD ACCEPTANCE COMPANY | FB024013 | 2000-06-19 | Inactive | PROVIDENCE |
| IRONWOOD ACCEPTANCE COMPANY, L.L.C. | FL000291 | 1998-03-09 | Inactive | SCOTTSDALE |
| Ironwood BBQ L.L.C. | DL044254 | 2015-07-06 | Dissolved | Spearfish |
| Ironwood Capital Management, LLC | DL316042 | 2025-12-18 | Active | North Sioux City |
| Ironwood Capital, LLC | DL206040 | 2021-07-07 | Active | Rapid City |
| Ironwood Carpentry and Construction, LLC | DL163564 | 2019-04-23 | Active | Watertown |
| IRONWOOD COMPANIES, INC. | FB033745 | 2009-08-24 | Revoked | HAM LAKE |
| IRONWOOD CONSTRUCTION SERVICES, INC. | DB046377 | 2003-01-16 | Active | BROOKINGS |
| Ironwood Contracting, LLC | DL150798 | 2018-07-09 | Dissolved | Sioux Falls |
| IRONWOOD CORPORATION | DB002225 | 1961-04-19 | Dissolved | — |
| IRONWOOD DEVELOPMENT CORP. | DB035611 | 1995-03-28 | Active | DEADWOOD |
| IRONWOOD ESTATES AT LEAD COUNTRY CLUB, INC. | NS013859 | 2008-10-20 | Active | PIERRE |
| Ironwood Finance Company | DB319048 | 2026-01-26 | Active | St. Louis |
| Ironwood Four 88 Management, LLC | DL170955 | 2019-10-01 | Active | Sioux Falls |
| Ironwood Four 90 Management, LLC | DL170956 | 2019-10-01 | Active | Sioux Falls |
| Ironwood Four 94 Management, LLC | DL170960 | 2019-10-01 | Active | Sioux Falls |
| Ironwood Four 97 Management, LLC | DL170961 | 2019-10-01 | Active | Sioux Falls |
| Ironwood Four Capital, LLC | DL171467 | 2019-10-11 | Active | Sioux Falls |
| Ironwood Four, LLC | DL171439 | 2019-10-10 | Inactive | Sioux Falls |
| Ironwood Holdings, LLC | DL248107 | 2023-04-05 | Active | Sioux Falls |
| IRONWOOD HOMES, L.L.C. | DL007096 | 2004-03-23 | Dissolved | — |
| Ironwood Industries LLC | DL287018 | 2024-11-13 | Active | Lake City |
| Ironwood Insights Group, LLC | FL176135 | 2020-01-21 | Active | Chandler |
| Ironwood Insurance Services, LLC | FL153180 | 2018-08-29 | Active | Atlanta |
| IRONWOOD INSURANCE SERVICES, LLC | FL003926 | 2008-01-29 | Revoked | ATLANTA |
| Ironwood Investments LLC | DL232765 | 2022-08-17 | Active | EDEN |
| Ironwood Life SD, LLC | DL185318 | 2020-07-30 | Active | SIOUX FALLS |
| Ironwood LLC | DL295839 | 2025-03-18 | Active | — |
| IronWood Productions LLC | DL290461 | 2025-01-07 | Active | Spearfish |
| Ironwood Rainworks, Inc. | DB131070 | 2017-02-27 | Active | Spearfish |
| Ironwood Ranch, LLC | DA227774 | 2022-05-26 | Active | Estelline |
| Ironwood Ranch, LLC | DL227774 | 2022-05-26 | Active | Sioux Falls |
| IRONWOOD REALTY ADVISORS, L.L.C. | DL011972 | 2006-08-24 | Inactive | — |
| IRONWOOD REALTY TRS 1, LLC | FL043240 | 2015-01-30 | Inactive | CHARLOTTE |
| IRONWOOD SECURITIES, INC. | FB011384 | 1987-03-20 | Revoked | LITTLETON |
| Ironwood Services LLC | DL312657 | 2025-10-30 | Active | Belle Fourche |
| IRONWOOD WARRANTY, LLC | FL182826 | 2020-06-10 | Active | JEFFERSONVILLE |
| IRONWOOD, L.L.C. | DL013284 | 2007-02-22 | Dissolved | SPEARFISH |
| IRONWORKS LEASING, LLC | DL021190 | 2010-04-07 | Dissolved | HARRISBURG |
| IRONXCHANGE, INC. | DB059275 | 2014-07-23 | Dissolved | WATERTOWN |
| IROQUOIS AMBULANCE SERVICE, INC. | NS000916 | 1966-01-12 | Inactive | — |
| IROQUOIS AREA JAYCETTES | NS006407 | 1978-01-10 | Inactive | — |
| Iroquois Booster Club, Inc. | NS049915 | 2016-02-26 | Active | Iroquois |
| IROQUOIS COMMUNITY FIRE TRUCK ASSOCIATION | NS009837 | 1993-04-19 | Inactive | — |
| IROQUOIS ENTERPRISES, LLC | DL026184 | 2011-11-08 | Inactive | IROQUOIS |
| IROQUOIS FINE ARTS BOOSTER ASSOCIATION | NS014397 | 2010-08-20 | Dissolved | — |
| IROQUOIS HOUSING DEVELOPMENT, INC. | NS002882 | 1968-08-28 | Active | Iroquois |
| IROQUOIS IRONWORKER, INC. | DB047257 | 2003-08-25 | Active | IROQUOIS |
| IROQUOIS LAKE ASSOCIATION | NS008285 | 1986-04-28 | Inactive | — |
| IROQUOIS NORTHEAST, INC. | FB151573 | 2018-07-26 | Inactive | WILMINGTON |
| IROQUOIS OF TENNESSEE, INC. | FB038131 | 2014-09-26 | Inactive | CHATTANOOGA |
| IROQUOIS STORE & CAFE LLC | DL147416 | 2018-05-01 | Dissolved | IROQUOIS |
| IROQUOIS TADODAHO GROUP, INC. | FB038127 | 2014-09-26 | Inactive | ALLEGANY |
| IROQUOIS, SD | CI000220 | 2003-10-23 | Active | DESMET |
| IROQUOIS/ICBA INSURANCE SERVICES GROUP, INC. | FB028228 | 2004-02-10 | Revoked | MINNEAPOLIS |
| Irox Holdings LLC | DL276558 | 2024-06-07 | Active | Sioux Falls |
| IROY PORK, INC. | DF023062 | 1984-01-12 | Dissolved | — |
| IRR-RESIDENTIAL, LLC | FL006130 | 2012-02-10 | Inactive | WESTWOOD |
| IRREVOCABLE LIFE INSURANCE TRUST AGREEMENT OF BETTY JOAN HAUPT | DT000172 | 2008-06-13 | Active | — |
| IRRIGATION AND LAWN CARE SPECIALISTS, INC. | DB053935 | 2008-09-30 | Dissolved | WATERTOWN |
| IRRIGATION DISTRICTS | ID000000 | 1753-01-01 | Active | — |
| IRRIGATION SERVICES PLUS, L.L.C. | DL009047 | 2005-04-18 | Dissolved | HURLEY |
| IRRIGATION SPECIALIST, INC. | DB036535 | 1995-12-14 | Inactive | — |
| IRRIGATORS ASSOCIATION OF SOUTHEAST SOUTH DAKOTA | NS015084 | 2013-03-26 | Active | VIBORG |
| IRT Management, LLC | DL268518 | 2024-02-14 | Dissolved | Austin |
| IRULAN, INC. | DB046258 | 2002-12-26 | Dissolved | FLANDREAU |
| IRVIN ABRAHAMS LIMITED PARTNERSHIP | DP000663 | 1997-02-26 | Inactive | — |
| IRVIN BUCHANAN, INC. | 19640103D | 1964-01-03 | Suspended | — |
| IRVINE ASSOCIATES, INC. | DB030372 | 1991-03-07 | Inactive | — |
| Irvine Construction LLC | DL140512 | 2017-12-03 | Active | Brandon |
| Irvine Contracting, LLC | DL150881 | 2018-07-10 | Inactive | Sioux Falls |
| IRVINE G. RICHARDSON COMPANY | DF003075 | 1963-01-29 | Active | LONG VALLEY |
| IRVINE PROPERTIES, LLC | DL014282 | 2007-07-18 | Inactive | SIOUX FALLS |
| IRVINE TRUCKING INC. | DB055612 | 2010-09-23 | Dissolved | Custer |
| IRVING AND LORETTA SANDLER, INC. | 19620073D | 1962-05-17 | Active | — |
| Irving Center Apartments Limited Partnership | DP169184 | 2019-08-23 | Active | SIOUX FALLS |
| IRVING F. JENSEN CO., INC. | FB007641 | 1981-04-20 | Inactive | SIOUX CITY |
| IRVING TANNING COMPANY | 19620018F | 1962-07-26 | Withdrawn | — |
| IRVING WEBER ASSOCIATES, INC. | FB023703 | 2000-03-27 | Revoked | SMITHTOWN |
| IRVING WEBER ASSOCIATES, INC. | FB033497 | 2009-05-22 | Active | SMITHTOWN |
| Irving, LLC | DL239535 | 2022-12-01 | Active | Sioux Falls |
| Irwin Family Farms, LLP | DR188105 | 2020-09-23 | Active | Omak |
| IRWIN HOME EQUITY CORPORATION | FB032751 | 2008-06-26 | Inactive | SAN RAMON |
| Irwin Industrial Inspection and Repair LLC | DL164425 | 2019-05-10 | Active | Beresford |
| IRWIN MORTGAGE CORPORATION | FB019868 | 1997-03-06 | Inactive | COLUMBUS |
| Irwin Real Estate Holding L.L.C. | DL223310 | 2022-03-23 | Dissolved | Rapid City |
| Irwin Seating Company | FB242675 | 2023-01-20 | Active | Grand Rapids |
| IRWIN SIEGEL AGENCY, INC. | FB013120 | 1989-10-27 | Revoked | ROCK HILL |
| IRWIN SYMENS, LLC | DL141580 | 2017-12-27 | Dissolved | Claremont |
| Irwin Welding and Repair LLC | DL207040 | 2021-07-22 | Dissolved | Rapid City |
| IS Agency, LLC | FL181821 | 2020-05-19 | Active | Chandler |
| IS DIRECT AGENCY, INC. | FB029020 | 2004-10-12 | Revoked | PALM BEACH GARDENS |
| Is Few LLC | DL236359 | 2022-10-08 | Dissolved | Huron |