| ECG La Mesa, LP | DP276613 | 2024-06-07 | Inactive | PIERRE |
| ECG Properties, LLC | DL263440 | 2023-11-30 | Active | Winner |
| ECG Rapid City Developer, LLC | FL258274 | 2023-09-07 | Active | Nashville |
| ECG Rapid City GP, LLC | FL258271 | 2023-09-07 | Active | Nashville |
| ECG Rapid City, LP | DP258951 | 2023-09-18 | Active | RAPID CITY |
| ECH CONSTRUCTION LLC | DL279551 | 2024-07-24 | Active | PLAN CITY |
| Echaft Carpentry LLC | DL275337 | 2024-05-20 | Dissolved | Harrisburg |
| ECHAGA CORPORATION | FB218675 | 2022-01-12 | Active | PINE RIDGE |
| ECHAGA CORPORATION NON-PROFIT | NS261181 | 2023-10-21 | Active | PINE RIDGE |
| Echappe Dance Studio, LLC | DL132111 | 2017-04-01 | Inactive | RAPID CITY |
| Echelon 913 LLC | DL281917 | 2024-08-28 | Active | Spearfish |
| Echelon Artistry, LLC | DL141974 | 2018-01-03 | Active | NEW YORK |
| Echelon Financial, LLC | DL047068 | 2016-02-12 | Dissolved | SIOUX FALLS |
| ECHELON FITNESS MULTIMEDIA LLC | FL204359 | 2021-06-08 | Active | Chattanooga |
| Echelon Health Partners LLC | DL297398 | 2025-04-07 | Active | Spearfish |
| Echelon Inc | DB295053 | 2025-03-08 | Dissolved | Spearfish |
| Echelon Innovations, LLC | FL262001 | 2023-11-06 | Active | Columbia |
| Echelon Real Property LLC | DL168924 | 2019-08-19 | Active | Vermillion |
| ECHIDNA ENTERPRISES, LLC | DL030624 | 2012-12-19 | Inactive | EMMAVILLE |
| ECHL Inc. | FN030415 | 2014-12-15 | Active | Shrewsbury |
| ECHLIN ACQUISITION, INC. | FB019465 | 1996-10-25 | Revoked | WILMINGTON |
| ECHO 6, INC. | DB056867 | 2012-05-04 | Dissolved | HAYTI |
| ECHO ACQUISITION CORPORATION | DB043759 | 2001-02-02 | Dissolved | — |
| Echo Acres LLC | DL180918 | 2020-05-04 | Dissolved | Yankton |
| ECHO BAY PUBLIC SECURITIES, LLC | DL012596 | 2006-11-29 | Active | OMAHA |
| ECHO BAY, INC. | DB051681 | 2006-11-06 | Active | OMAHA |
| Echo Bravo Aviation LLC | DL274847 | 2024-05-13 | Active | Rapid City |
| Echo Creek, LLC | DL287724 | 2024-11-25 | Dissolved | Truckee |
| ECHO ELECTRIC SUPPLY COMPANY OF SIOUX CITY, IOWA, INC. | FB036087 | 2012-06-29 | Active | COUNCIL BLUFFS |
| Echo Enterprises and Investments LLC | DL277346 | 2024-06-19 | Dissolved | Pierre |
| ECHO ENTERPRISES, INC. | DB035267 | 1995-01-10 | Inactive | MADISON |
| Echo Essentials LLC | DL263679 | 2023-12-04 | Active | Sioux Falls |
| ECHO FARM AND CATTLE LLC | DL020744 | 2010-02-08 | Active | MUD BUTTE |
| Echo Free Attics LLC | DL294963 | 2025-03-07 | Active | Sioux Falls |
| Echo Glen Affordable Housing Capital, LLC | DL222536 | 2022-03-11 | Active | WESTLAKE VLG |
| Echo Glen Affordable Housing Holding, LLC | DL222540 | 2022-03-11 | Active | WESTLAKE VILLAGE |
| Echo Glen Apartments Owner LP | FP331034 | 2026-06-12 | Active | NEW YORK |
| Echo Glen Senior Affordable Housing, LP | DP221742 | 2022-03-01 | Active | RAPID CITY |
| Echo Holdings, Inc. | DB138516 | 2017-10-16 | Dissolved | Rapid City |
| ECHO HOUSE LLC | DL331185 | 2026-06-15 | Active | NEMO |
| ECHO INVESTMENTS, L.L.C. | DL006167 | 2003-08-15 | Dissolved | LEAD |
| ECHO JULIET LIMITED PARTNERSHIP | DP001244 | 2001-01-02 | Active | — |
| ECHO LAKE ASSOCIATION, INC. | 19440013ND | 1944-09-27 | Active | — |
| ECHO LOCUM TENENS, INC. | FB038300 | 2014-12-16 | Active | Nashville |
| ECHO LODGE NO. 52 I.O.O.F. | 19590053ND | 1889-06-07 | Dissolved | — |
| Echo Market LLC | DL248668 | 2023-04-14 | Active | Brookings |
| ECHO MOUNTAIN INVESTMENTS & CONSULTING, L.L.C. | DL022396 | 2010-09-13 | Active | LEAD |
| ECHO OF MOBRIDGE, LLC | DL010770 | 2006-02-23 | Inactive | — |
| ECHO PARK LANDOWNERS' ASSOCIATION, INC. | NS009448 | 1991-07-31 | Dissolved | — |
| ECHO REAL PROPERTY, LLC | DL014112 | 2007-06-20 | Active | HARTINGTON |
| ECHO SEISMIC USA INC. | FB224691 | 2022-04-11 | Active | Prairieville |
| Echo Three Outdoors LLC | DL306028 | 2025-07-31 | Active | Rapid City |
| Echo Trade USA Inc. | DB180548 | 2020-04-27 | Dissolved | Los Angeles |
| Echo Valley Enterprises, Inc. | DB182181 | 2020-05-28 | Active | SIOUX FALLS |
| ECHO VALLEY LAND HOLDINGS, L.L.C. | DL012569 | 2006-11-27 | Dissolved | WESSINGTON SPRINGS |
| ECHO VALLEY RANCH, INC. | DB051723 | 2006-11-27 | Dissolved | WESSINGTON SPRINGS |
| ECHO VALLEY, LLC | DL021187 | 2010-04-06 | Active | Kadoka |
| Echo Watch Holding, LLC | DL262358 | 2023-11-10 | Active | Rapid City |
| Echo Werks LLC | DL320218 | 2026-02-07 | Active | Rapid City |
| Echo World, LLC | DL281094 | 2024-08-14 | Dissolved | Dallas |
| Echo Zulu Defense, LLC | DL260452 | 2023-10-10 | Active | Sturgis |
| echo11 consulting LLC | DL234432 | 2022-09-12 | Active | — |
| Echolalia Entertainment LLC | DL187845 | 2020-09-16 | Inactive | Gainesville |
| Echologics, LLC | FL043107 | 2014-11-13 | Active | Atlanta |
| ECHOLS COMMUNICATIONS, INC. | DB034722 | 1994-08-18 | Inactive | SIOUX FALLS |
| EchoNote, LLC | DL330266 | 2026-06-02 | Active | Rapid City |
| ECHOPARK AUTOMOTIVE, INC. | FB244169 | 2023-02-09 | Active | Charlotte |
| Echoron Inc | DB328883 | 2026-05-15 | Active | Rapid City |
| Echthaft Trailers, LLC | DL017196 | 2008-08-20 | Active | HOSMER |
| ECI AGENCY, INC. | FB020764 | 1997-11-26 | Revoked | CHICAGO |
| ECI AGENCY, INC. D/B/A ECI AGENCY OF SOUTH DAKOTA, INC. | FB025007 | 2001-04-05 | Revoked | CHICAGO |
| ECI AGENCY, INC. DBA ECI AGENCY OF SOUTH DAKOTA, INC. | FB029002 | 2004-10-05 | Inactive | FT WORTH |
| ECI COMMUNICATIONS INC. | FB025711 | 2001-11-19 | Revoked | SPARKS |
| ECI CONSULTING SERVICES, INC. | FB023908 | 2000-05-19 | Revoked | BANDANA |
| ECI HP E-Health (TN), PLLC | FL043017 | 2014-10-02 | Inactive | Lafayette |
| ECI PHARMACEUTICALS LLC | FL043470 | 2015-04-20 | Revoked | FORT LAUDERDALE |
| ECI SERVICES OF SOUTH DAKOTA, INC. | FB018968 | 1996-05-20 | Inactive | WILMINGTON |
| ECIMANI, INC. | NS008708 | 1988-04-01 | Inactive | — |
| ECK & GLASS INC. | FB020211 | 1997-06-20 | Active | Memphis |
| Eck's Contracting LLC | DL038191 | 2014-04-04 | Dissolved | Rogers |
| ECKARD WATER COMPANY, INCORPORATED | DB010867 | 1971-12-23 | Active | EDGEMONT |
| ECKART TRUCKING, INC. | FB030080 | 2005-10-26 | Revoked | MILES CITY |
| ECKART TRUCKING, INC. | FB032310 | 2008-01-09 | Revoked | MILES CITY |
| Eckbond Coatings Inc. | FB135166 | 2017-07-19 | Inactive | Brea |
| ECKCO TECHNOLOGIES INC. | DB056014 | 2011-03-18 | Active | Madison |
| ECKERD COLLEGE, INC. | FN011372 | 2013-02-19 | Active | ST PETERSBURG |
| ECKERT ENTERPRISES, INC. | DB028550 | 1989-07-12 | Inactive | — |
| Eckhardt Trucking LLC | DL149538 | 2018-06-12 | Inactive | — |
| Eckhart Gage Enterprises LLC | DL166767 | 2019-07-08 | Inactive | Rapid City |
| ECKLEIN BROS., INC. | DB020093 | 1980-10-16 | Dissolved | — |
| Ecklund Family, LLC | DL212494 | 2021-10-18 | Active | University Place |
| ECKMAN & MITCHELL CONSTRUCTION, LLC | FL002998 | 2006-06-30 | Inactive | SALT LAKE CITY |
| ECKMAN FINE ART, INC. | DB043141 | 2000-08-18 | Active | RAPID CITY |
| ECKRICH CHILDREN'S FARMS, LLC | DA033152 | 2013-07-17 | Active | RAPID CITY |
| ECKRICH FAMILY, LLC | DL019649 | 2009-08-31 | Active | ABERDEEN |
| ECKRICH PICKEREL LAKE HOME, LLC | DL020083 | 2009-11-02 | Dissolved | ABERDEEN |
| Eckstaine Consulting LLC | DL216395 | 2022-02-28 | Dissolved | Sioux Falls |
| ECL Housing 2, LLC | DL234075 | 2022-09-06 | Active | Winner |
| ECL Housing 3, LLC | DL263352 | 2023-11-29 | Active | Winner |
| ECL Housing, LLC | DL234069 | 2022-09-06 | Active | Winner |
| ECL II, LLC | DL039069 | 2014-06-04 | Dissolved | Tulare |
| ECL Properties 2, LLC | DL234552 | 2022-09-13 | Active | Winner |
| ECL Properties 3, LLC | DL240540 | 2022-12-19 | Active | Winner |
| ECL Properties 5, LLC | DL321330 | 2026-02-20 | Active | Winner |
| ECL Properties, LLC | DL234078 | 2022-09-06 | Active | Winner |
| ECL, LLC | DL019040 | 2009-06-01 | Active | HURON |
| ECL1 Enterprises, LLC | DL041848 | 2015-01-07 | Dissolved | WATERTOWN |
| Eclectic Bison Productions, LLC | DL199419 | 2021-03-24 | Active | ELKTON |
| ECLECTIC CONCEPTS, INC. | DB036086 | 1995-07-28 | Inactive | — |
| ECLECTIC DOMESTIC LLC | DL002744 | 2000-01-21 | Inactive | — |
| Eclectic Elements LLC | DL240040 | 2022-12-09 | Active | North Sioux City |
| ECLECTIC LIVING, L.L.C. | DL020875 | 2010-02-25 | Active | RAPID CITY |
| Eclectix Productions LLC | DL255381 | 2023-07-25 | Dissolved | Vermillion |
| ECLINICAL WORKS, LLC | FL043796 | 2015-09-25 | Active | WESTBOROUGH |
| Eclipse Coffee & Lounge LLC | DL144810 | 2018-03-14 | Dissolved | SIOUX FALLS |
| ECLIPSE DIGITAL IMAGING, INC. | DB040736 | 1998-11-25 | Active | Sioux Falls |
| Eclipse Electric Technologies LLC | DL269162 | 2024-02-23 | Active | Watertown |
| Eclipse Equipment, Inc. | DB151475 | 2018-07-25 | Dissolved | Sioux Falls |
| ECLIPSE HOLDINGS, LLC | DL030017 | 2012-11-13 | Dissolved | MADISON |
| ECLIPSE INC. | DB053846 | 2008-08-11 | Dissolved | SIOUX FALLS |
| ECLIPSE INSIGHTS LLC | FL277835 | 2024-06-27 | Inactive | Atanta |
| Eclipse Investments LLC | DL140803 | 2017-12-08 | Active | BROOKINGS |
| Eclipse Management Solutions, LLC | DL282263 | 2024-09-03 | Dissolved | Rapid City |
| ECLIPSE MEDICAL, INC. | FB017955 | 1995-06-07 | Revoked | EDEN PRAIRIE |
| Eclipse Partners, LLC | DL178361 | 2020-03-05 | Active | Tea |
| Eclipse Solar, LLC | DL237818 | 2022-11-02 | Inactive | ASHEVILLE |
| Eclipse Solutions LLC | DL229734 | 2022-06-29 | Inactive | Belle Fourche |
| ECLIPSYS CORPORATION | FB031854 | 2007-07-25 | Inactive | ATLANTA |
| ECLIPSYS SOLUTIONS CORP. | FB031973 | 2007-09-10 | Inactive | IRVINE |
| ECLIPTIC LLC | DL031317 | 2013-02-15 | Active | PIERRE |
| Eclixir, LLC | DL039004 | 2014-05-30 | Active | Brandon |
| ECM Holding Group, Inc. | FB200231 | 2021-04-06 | Active | Oshkosh |
| ECM Holding Group, LLC | FL172417 | 2019-10-31 | Inactive | Oshkosh |
| ECM Hospitality LLC | DL276796 | 2024-06-12 | Active | rapid city |
| ECM Industrial, LLC | DL284520 | 2024-10-04 | Active | Sioux Falls |
| ECM PARKS AND RECREATION, INC. | DB055703 | 2010-11-17 | Dissolved | STURGIS |
| ECM Sand and Gravel LLC | DL133215 | 2017-05-08 | Dissolved | Highmore |
| ECM Yield Fund II, LLC | FL302034 | 2025-06-09 | Active | Sioux Falls |
| ECM Yield Fund LLC | DL259758 | 2023-09-28 | Active | Sioux Falls |
| ECM, Inc. | FB288849 | 2024-12-12 | Active | Rapid City |
| ECN, LLC | DL262870 | 2023-11-20 | Active | Austin |
| ECO ALTERNATIVE FUEL SYSTEMS, INC. | FB033810 | 2009-09-18 | Active | WILLISTON |
| ECO AUTO'S INC. | DB053739 | 2008-06-26 | Dissolved | SPEARFISH |
| Eco Clean RV Tank Service, LLC | DL170823 | 2019-09-27 | Dissolved | Sioux Falls |
| Eco Cleaning LLC | DL299816 | 2025-05-07 | Active | Sioux Falls |
| ECO COMPANIES, LLC | DL236890 | 2022-10-18 | Dissolved | sioux falls |
| Eco Drain System LLC | DL041315 | 2014-12-05 | Dissolved | WALBRIDGE |
| Eco Earth Resources, Inc. | DB060266 | 2015-08-12 | Dissolved | SAN DIEGO |
| Eco Entertainment | NS333907 | 2026-07-16 | Active | Sioux Falls |
| Eco Farming Innovative Solutions & Consulting, LLC | DL206517 | 2021-07-15 | Dissolved | LEOLA |
| Eco Fresh Carpet Cleaning LLC | DL318225 | 2026-01-30 | Active | Sioux Falls |
| ECO FRIENDLY PEST CONTROL II INC | DB060026 | 2015-04-27 | Active | Sioux Falls |
| ECO FUEL INNOVATIONS, LLC | DL021096 | 2010-03-29 | Inactive | VERMILL |
| Eco Global, LLC | DL156363 | 2018-11-14 | Dissolved | Rapid City |
| ECO IRON TECHNOLOGIES, LLC | DL029434 | 2012-09-17 | Dissolved | HOUSTON |
| Eco Iron USA, Inc. | DB059148 | 2014-06-05 | Dissolved | FORT WORTH |
| ECO LLC | DL038115 | 2014-03-27 | Dissolved | CHAMBERLAIN |
| Eco LLC | DL258374 | 2023-09-08 | Dissolved | Hollywood |
| Eco Material Technologies Inc. | FB221189 | 2022-02-22 | Active | SOUTH JORDAN |
| Eco Nutrition, LLC | DL194814 | 2021-01-15 | Inactive | Rapid City |
| ECO PAYMENTS, INC. | FB215072 | 2021-11-23 | Active | SOMERVILLE |
| ECO PLASTICS TRADE CORP. | DB226468 | 2022-05-05 | Active | Watertown |
| ECO PRAIRIE SEED, LLC | DL029076 | 2012-08-13 | Inactive | HARRISBURG |
| ECO RESOURCES, INC. | FB026887 | 2002-12-23 | Inactive | LOS ANGELES |
| Eco Salon Suites Inc. | DB292969 | 2025-02-10 | Dissolved | Watertown |
| ECO SOLUTIONS, LLC | DL016902 | 2008-07-07 | Inactive | ANACONDA |
| Eco Soul Salon Studio, LLC | DL218934 | 2022-01-20 | Active | Watertown |
| Eco Tree and Brush Clearing, LLC | DL039400 | 2014-06-30 | Active | RAPID CITY |
| ECO WORKS INC | DB060801 | 2016-04-08 | Dissolved | Rapid City |
| ECO, INC. (RAPID CITY) | DB022120 | 1983-02-01 | Inactive | — |
| ECO-ASSET HOLDINGS, LLC | FL197863 | 2021-03-03 | Active | COLUMBIA |
| Eco-Asset Midwest, LLC | DL048813 | 2016-06-08 | Active | SIOUX FALLS |
| ECO-CHEM NETWORK, INC. | FB016127 | 1993-06-10 | Revoked | CINCINNATI |
| ECO-ENERGY DISTRIBUTION SERVICES, LLC | FL006055 | 2012-01-06 | Active | Franklin |
| Eco-Energy Natural Gas, LLC | FL154158 | 2018-12-01 | Active | Franklin |
| ECO-ENERGY, INC. | FB032804 | 2008-07-17 | Inactive | FRANKLIN |
| ECO-ENERGY, LLC | FL006666 | 2013-01-11 | Active | FRANKLIN |
| Eco-Fresh Cleaning Services, LLC | DL204693 | 2021-06-15 | Active | BROOKINGS |
| ECO-FRIENDLY PEST CONTROL, LLC | DL026669 | 2011-12-27 | Inactive | SIOUX FALLS |
| ECO-LOGIC SERVICES, INC. | FB026552 | 2002-08-22 | Inactive | RANDOLPH |
| ECO-NATIVE HOLDINGS, LLC | DL035281 | 2013-09-26 | Inactive | RAPID CITY |
| Eco-Pork America Inc. | FB330111 | 2026-06-01 | Active | Palo Alto |
| ECO-PULV, INC. | DB048268 | 2004-05-13 | Inactive | — |
| ECO-SITE II, LLC | FL160577 | 2019-02-19 | Inactive | Morrisville |
| ECO-SITE, LLC | FL207801 | 2021-08-05 | Inactive | BOCA RATON |
| Eco-Trax, LLC | DL038852 | 2014-05-16 | Inactive | YANKTON |
| ECO-WASTE SOLUTIONS, INC. | DB052965 | 2007-11-29 | Dissolved | SIOUX FALLS |
| ECO3 GRAPHICS USA CORP. | FB256269 | 2023-08-08 | Active | Carlstadt |
| ECO4 Energy LLC | FL315827 | 2025-12-16 | Active | West Palm Beach |
| ECO_SCAPES, LLC | DL018225 | 2009-02-04 | Active | RAPID CITY |
| ECOATM, INC. | FB036604 | 2013-03-01 | Inactive | SAN DIEGO |
| ECOATM, LLC | FL129459 | 2017-01-06 | Active | SAN DIEGO |
| ECOBANK NETWORK, LLC | FL006621 | 2012-12-18 | Inactive | NORTH CHARLESTON |
| EcoBlast Dry Ice Blasting LLC | DL014567 | 2007-08-30 | Active | SIOUX FALLS |
| ECOBLOCK, INC. | FB027664 | 2003-09-02 | Active | ADDISON |
| EcoBridge Infrastructure Services LLC | FL302822 | 2025-06-18 | Active | Houston |
| EcoBuilders LLC | DL144317 | 2018-02-22 | Dissolved | Aberdeen |
| EcoCabins, LLC | DL048004 | 2016-04-13 | Dissolved | HOT SPRINGS |
| Ecocountertops USA LLC | DL039773 | 2014-08-01 | Dissolved | Bruce |
| EcoDoor Sustainable Garage Door Repair & Supplier CO | DB250373 | 2023-05-09 | Dissolved | Aberdeen |