| MTM TILING, LLC | DL018600 | 2009-03-30 | Dissolved | Goodwin |
| MTMJ7 LLC | DL233998 | 2022-09-05 | Active | Milbank |
| Mtn Creek Songs LLC | DL189111 | 2020-10-09 | Inactive | Brookings |
| MTN VIEW PLUMBING, INC. | DB056140 | 2011-05-10 | Dissolved | LAKE NORDEN |
| MTN West Fiber LLC | DL262118 | 2023-11-07 | Dissolved | Wessington Springs |
| MTN, LLC | DL135144 | 2017-07-18 | Active | Rapid City |
| MTN. VIEW MANOR, LLC | DL026506 | 2011-12-08 | Inactive | STURGIS |
| MTP ENTERPRISES, INC. | DB052678 | 2007-08-21 | Active | BURKE |
| MTP LLC | DL329602 | 2026-05-26 | Active | Sioux Falls |
| MTR CAR CENTER LLC | DL030027 | 2012-11-13 | Dissolved | ABERDEEN |
| MTR Industrial Constructors, LLC | DL045143 | 2015-09-16 | Dissolved | Jacksonville |
| MTR LAND LIMITED PARTNERSHIP | DP002511 | 2012-12-21 | Active | GETTYSBURG |
| MTR Miles, LLC | DL211392 | 2021-10-01 | Active | Rapid City |
| MTR Property Management, LLC | DL304624 | 2025-07-14 | Active | Rapid City |
| MTR TECHNOLOGIES, INC. | DB031020 | 1991-10-09 | Active | Brookings |
| MTR, LLC | DL250415 | 2023-05-09 | Active | Mina |
| MTRA Inc | DB254520 | 2023-07-12 | Active | Rapid City |
| MTRBTN, LLC | DL272547 | 2024-04-09 | Active | Rapid City |
| MTRE - SIOUX FALLS, SD, LLC | FL199409 | 2021-03-24 | Active | Sioux Falls |
| MTS ENTERPRISE INVESTMENTS LLC | DL281866 | 2024-08-27 | Active | Sioux Falls |
| MTS ENTERPRISES L.L.C. | DL020589 | 2010-01-13 | Dissolved | RAPID CITY |
| MTS FAMILY, LLP | DR001266 | 2009-04-13 | Inactive | ELK POINT |
| MTS Farms, Inc. | DB221773 | 2022-03-01 | Active | Warner |
| MTS Group LLC | FL209479 | 2021-09-01 | Active | Pittsburgh |
| MTS MOBILE RV REPAIR INC. | FB279679 | 2024-07-25 | Active | GOLDEN |
| MTS PACKAGING SYSTEMS, INC. | FB035375 | 2011-08-31 | Inactive | ST. PETERSBURG |
| MTS Premier LLC | DL188440 | 2020-09-29 | Dissolved | Dallas |
| MTS Quanta, LLC | FL043537 | 2015-06-03 | Active | Willow Park |
| MTS SALES LLC | DL191566 | 2020-11-23 | Dissolved | Rapid City |
| MTS SYSTEMS CORPORATION | FB036537 | 2013-02-11 | Active | Eden Prairie |
| MTS VENTURES MANAGEMENT LLC | DL157872 | 2018-12-20 | Inactive | PIERRE |
| MTS, INC. | DB033389 | 1993-09-08 | Inactive | — |
| MTS, LLC | DL278061 | 2024-07-01 | Active | Rapid City |
| MTS, LLC | DL021728 | 2010-06-16 | Dissolved | FLANDREAU |
| MTT CO. | FB037609 | 2014-03-19 | Active | DENISON |
| MTT1 LLC | DL210136 | 2021-09-14 | Active | Rapid City |
| MTTR Leasing, LLC | DL257324 | 2023-08-24 | Active | Black Hawk |
| MTV CAPITAL LIMITED PARTNERSHIP | DP000586 | 1996-10-04 | Inactive | — |
| MTV DEVELOPMENT, LLC | DL016928 | 2008-07-11 | Dissolved | SIOUX FALLS |
| MTV HOLDINGS LIMITED PARTNERSHIP | DP000585 | 1996-10-04 | Inactive | — |
| MTV LAND LLC | DL135822 | 2017-08-10 | Dissolved | RAPID CITY |
| MTV MANAGEMENT LIMITED PARTNERHSIP | DP000587 | 1996-10-04 | Inactive | — |
| MTV MANAGEMENT, LLC | DL015429 | 2007-12-31 | Inactive | SIOUX FALLS |
| MTV NETWORKS ON CAMPUS INC. | FB026676 | 2002-10-15 | Inactive | New York |
| MTV OIL AND GAS LIMITED PARTNERSHIP | DP000584 | 1996-10-04 | Inactive | — |
| MTV OPERATIONS II, L.L.C. | DL000984 | 1996-10-02 | Inactive | — |
| MTV REAL ESTATE LIMITED PARTNERSHIP | DP000588 | 1996-10-04 | Inactive | — |
| MTW COMPANY | DB026120 | 1987-02-10 | Inactive | — |
| MTW Construction LLC | DL269933 | 2024-03-04 | Dissolved | Vermillion |
| MTW SERVICES LLC | DL128345 | 2016-12-06 | Active | Hot Springs |
| MTW Solutions, LLC | FL042889 | 2014-08-11 | Active | Overland Park |
| MTX Excavation LLC | DL299021 | 2025-04-29 | Active | Sioux Falls |
| MTX OF SOUTHWEST FLORIDA, INC. | FB027472 | 2003-07-10 | Inactive | VENICE |
| MTY, LLC | DL042347 | 2015-02-17 | Active | ABERDEEN |
| MTZ Contractor LLC | DL153960 | 2018-09-17 | Active | Sioux Falls |
| MTZ LLC | DL024641 | 2011-05-11 | Dissolved | CUSTER |
| MU SYSTEMS, INC. | DB033366 | 1993-08-30 | Active | BALTIC |
| MU, INCORPORATED | FB007748 | 1981-06-01 | Revoked | LEBANON |
| Much Kneaded Massage LLC | DL133750 | 2017-05-25 | Dissolved | Sioux Falls |
| MUCKEY FARMS, L.L.C. | DA001228 | 1997-05-05 | Active | GEDDES |
| Muckuk LLC | DL258889 | 2023-09-16 | Dissolved | Watertown |
| MUCO VAX, L.L.C. | DL007527 | 2004-06-25 | Inactive | BROOKINGS |
| MUD BUTTE ROPING CLUB, INC. | NS005375 | 1973-08-08 | Inactive | — |
| Mud Butte Volunteer Fire Department | NS300269 | 2025-05-15 | Active | Mud butte |
| Mud Cat Custom Creations. LLC | DL256349 | 2023-08-09 | Active | Rapid City |
| Mud Creek Ag LLC | DL265678 | 2024-01-03 | Active | Watertown |
| Mud Creek Hunts LLC | DL153001 | 2018-08-27 | Inactive | Mellette |
| MUD CREEK LIMITED PARTNERSHIP | DP001666 | 2005-08-24 | Active | — |
| MUD CREEK WATERSHED DISTRICT | WD000026 | 1967-01-19 | Active | — |
| Mud Duck, LLC | DL129903 | 2017-01-24 | Dissolved | Huron |
| MUD HEN, LLC | DL045611 | 2015-10-26 | Dissolved | SIOUX FALLS |
| Mud Lake Cattle Company, LLC | DL327391 | 2026-04-29 | Active | Webster |
| Mud Lake Inc | DB306151 | 2025-08-02 | Active | Kindred |
| MUD MILE COMMUNICATIONS INC. | DB057745 | 2013-04-23 | Active | SIOUX FALLS |
| MUD MULEZ DRYWALL, INC. | DB057788 | 2013-05-20 | Dissolved | SIOUX FALLS |
| MUDD BUTTES INVESTORS, INC. | DB023086 | 1984-01-20 | Inactive | — |
| Mudd Ink, LLC | DL265718 | 2024-01-03 | Dissolved | Mobridge |
| MUDD, L.L.C. | DL005936 | 2003-06-04 | Active | HOT SPRINGS |
| MuddBrothers LLC | DL213301 | 2021-10-28 | Dissolved | Jefferson |
| Mudds Properties LLC | DL284300 | 2024-10-02 | Active | Webster |
| Mudds Repair and Services LLC | DL205027 | 2021-06-21 | Active | Huron |
| Muddy Bites Inc | DB207025 | 2021-07-22 | Dissolved | North Sioux City |
| Muddy Bites LLC | DL153936 | 2018-10-01 | Dissolved | Volga |
| Muddy Boot Land Company, LLC | DL133903 | 2017-06-01 | Active | Vivian |
| Muddy Creek and Nixon Pro Rodeo, LLC | DL161103 | 2019-03-01 | Inactive | Kyle |
| MUDDY CREEK INC. | DB025667 | 1986-08-29 | Inactive | — |
| Muddy Creek Land & Cattle, LLC | DL132055 | 2017-03-30 | Dissolved | BUFFALO |
| MUDDY CREEK OIL & GAS, INCORPORATED | DB034607 | 1994-07-11 | Active | CHADRON |
| MUDDY CREEK OIL AND GAS INCORPORATED | FB012256 | 1988-08-12 | Revoked | RUSHVILLE |
| Muddy Creek Pro Rodeo, LLC | DL184606 | 2020-07-16 | Active | Scenic |
| Muddy Crepes LLC | DL239786 | 2022-12-06 | Inactive | Rapid City |
| Muddy Mutts LLC | DL326248 | 2026-04-16 | Active | Sisseton |
| Muddy Paws 26 LLC | DL329703 | 2026-05-27 | Active | Worthington |
| Muddy River Fencing LLC | DL271598 | 2024-03-26 | Active | Midland |
| MUDHEN PLAZA, LTD. | DB033606 | 1993-11-12 | Active | Mitchell |
| MUDLAKE SOLUTIONS LLC | DL043810 | 2015-05-28 | Dissolved | CORSICA |
| MUDLINE ADVENTURES, LLC | DL030150 | 2012-11-26 | Active | GLENHAM |
| Mudman Drywall LLC | DL202971 | 2021-05-14 | Dissolved | Whitewood |
| Mudro SD Hotel LLC | DL252821 | 2023-06-14 | Active | Murdo |
| MUDRUNNERS, LLC | DL003819 | 2001-06-01 | Inactive | PIERRE |
| MUDslinger CONCRETE LLC | DL274229 | 2024-05-03 | Active | Box Elder |
| MUDSLINGER EXCAVATION LLC | DL045248 | 2015-09-23 | Dissolved | BONESTEEL |
| Mudslingers Coffee SD, LLC | DL203403 | 2021-05-21 | Active | Yankton |
| MUDSLINGERS LLC | DL003320 | 2000-11-02 | Active | PLATTE |
| MUDSMITH, LLC | DL015743 | 2008-02-08 | Active | HAZEL |
| Mudwater, LLC | DL174490 | 2019-12-17 | Dissolved | New York |
| MudWorks Interiors LLC | DL257424 | 2023-08-26 | Dissolved | Box Elder |
| Muecke Photography LLC | DL177136 | 2020-02-10 | Active | Tea |
| Muecke Photography LTD | DB156463 | 2018-12-10 | Dissolved | Tea |
| Muehl Enterprises LLC | DL142896 | 2018-01-22 | Active | Rapid City |
| MUEHLEBACH TRANSPORT, LLC | DL195904 | 2021-02-01 | Dissolved | CANTON |
| MUEHLER ELECTRIC, INC. | FB025001 | 2001-04-04 | Active | WAHPETON |
| MUELLENBERG ELECTRIC, INCORPORATED | DB034323 | 1994-04-26 | Active | Rapid City |
| MUELLENBERG FAMILY FARM, INC. | DF023142 | 1984-02-13 | Active | REDFIELD |
| Muellenberg Trucking LLC | DL141708 | 2017-12-28 | Dissolved | Redfield |
| Mueller & Associates CPA, LLC | DL039639 | 2014-07-21 | Active | LEMMON |
| MUELLER CO. | FB011630 | 1987-08-14 | Inactive | PORTSMOUTH |
| MUELLER CONSTRUCTION, INC. | DB014898 | 1977-12-21 | Dissolved | MILBANK |
| Mueller Counseling LLC | DL223655 | 2022-03-28 | Active | Rapid City |
| MUELLER FAMILY LIMITED PARTNERSHIP, LLLP | DP001979 | 2009-02-13 | Active | OACOMA |
| Mueller Family Properties LLC | DL035682 | 2013-10-28 | Active | Brookings |
| Mueller Farms, LLC | DL327954 | 2026-05-05 | Active | Brookings |
| Mueller Handyman LLC | DL293992 | 2025-02-24 | Active | Buffalo |
| Mueller Heritage, LLC | DL137568 | 2017-09-26 | Active | Yankton |
| MUELLER INVESTMENTS LIMITED PARTNERSHIP | DP001697 | 2005-11-23 | Active | — |
| Mueller Lawns LLC | DL327903 | 2026-05-05 | Active | YANKTON |
| MUELLER LUMBER COMPANY | DB012739 | 1975-02-04 | Active | MITCHELL |
| Mueller Madness Sales, LLC. | DL324326 | 2026-03-25 | Active | Milbank |
| Mueller Mansion LLC | DL160428 | 2019-02-14 | Active | Sioux Falls |
| MUELLER METALWORKS, INC. | DB052862 | 2007-10-25 | Inactive | — |
| MUELLER METALWORKS, LLC | DL014920 | 2007-10-23 | Dissolved | — |
| MUELLER PALLETS, L.L.C. | DL003079 | 2000-06-30 | Active | SIOUX FALLS |
| MUELLER PIPELINERS, INC. | FB007893 | 1981-08-24 | Revoked | NEW BERLIN |
| MUELLER PIPELINERS, INC. | FB018546 | 1996-01-08 | Inactive | MEDIA |
| MUELLER PROPERTIES, LLC | DL028334 | 2012-05-30 | Active | FAULKTON |
| MUELLER PUMP COMPANY | FB009944 | 1984-12-06 | Revoked | DECATUR |
| Mueller Services, Inc. | FB137190 | 2017-09-18 | Active | Tonawanda |
| Mueller Sister's Writing Adventures, LLC | DL283988 | 2024-09-27 | Active | Hartford |
| MUELLER SYSTEMS, LLC | FL205237 | 2021-06-23 | Active | Atlanta |
| Mueller Transport Services LLC | DL236191 | 2022-10-05 | Dissolved | Hartford |
| Mueller Video Production, Inc. | DB044846 | 2001-12-24 | Active | SIOUX FALLS |
| Mueller Wrestling Academy LLC | DL325687 | 2026-04-09 | Active | Mitchel |
| Mueller's 2nd Addition Commercial Road District | TD153031 | 2018-08-27 | Active | — |
| MUELLER'S 2ND ADDITION DEVELOPMENT ASSOCIATION | NS170092 | 2019-09-12 | Active | Sioux Falls |
| Mueller's Legendary Outfitters, LLC | DL186830 | 2020-08-28 | Dissolved | Gregory |
| MUELLER-GEDDES INC. | DF003713 | 1964-06-30 | Suspended | Oacoma |
| Mufasi Crest Makings LLC | DL154740 | 2018-10-04 | Inactive | Long Lake |
| Muff Tats LLC | DL230335 | 2022-07-11 | Dissolved | Sturgis |
| MUFFIN TOPS, LLC | DL047044 | 2016-02-10 | Dissolved | FAULKTON |
| Muffinmen Investments, LLC | DL149260 | 2018-06-06 | Active | Dakota Dunes |
| MUFFINTOP INDUSTRIES LLC | DL022620 | 2010-10-13 | Dissolved | GOODWIN |
| MUFG AMERICAS CAPITAL LEASING & FINANCE, LLC | FL129607 | 2017-01-11 | Active | LOS ANGELES |
| MUFG SECURITIES AMERICAS INC. | FB145437 | 2018-03-15 | Active | NEW YORK |
| MUFUKA CHILDREN'S HOME | NS049438 | 2014-08-25 | Dissolved | — |
| Mug Shots "permanent makeup by Bonnie" LLC | DL128429 | 2016-12-08 | Inactive | Huron |
| MUGGLI TRUCKING LLC | DL243487 | 2023-02-01 | Active | WHITE |
| MUGS THE COFFEE HOUSE, INC. | DB053371 | 2008-03-06 | Dissolved | ABERDEEN |
| Mugsy Aviation, LLC | DL135660 | 2017-08-04 | Inactive | MADISON |
| MUHLBAUER ENTERPRISES, LLC | DL021383 | 2010-04-30 | Dissolved | BURBANK |
| Muhlenbeck Music Services LLC | DL315536 | 2025-12-11 | Active | Sioux Falls |
| Muhm Speed & Marine LLC | DL259608 | 2023-09-26 | Dissolved | Belle Fourche |
| Muhs Unlimited Inc | FB323755 | 2026-03-19 | Active | Omaha |
| MUILENBURG TRUCKING, INC. | DB045360 | 2002-04-19 | Inactive | — |
| MUILENBURGS, INC. | DF011012 | 1972-03-14 | Inactive | — |
| MUIRFIELD UNDERWRITERS, LTD. | FB021593 | 1998-07-23 | Inactive | CHICAGO |
| Muirs welding and fabrication LLC | DL155206 | 2018-10-16 | Dissolved | Rapid City |
| MUJERES DE FE - WOMEN OF FAITH, NON-PROFIT CORP. | NS155295 | 2018-10-18 | Dissolved | SIOUX FALLS |
| Muji Gallery, LLC | DL263080 | 2023-11-22 | Active | Spearfish |
| Mujushi Consulting LLC | DL324377 | 2026-03-26 | Active | Watertown |
| MUKAI INVESTMENT INCORPORATED | DB036823 | 1996-02-08 | Inactive | — |
| MUKERJI, M.D., P.C., SANJAY | DB044141 | 2001-05-17 | Dissolved | ABERDEEN |
| MUKNAW, INC. | DB054631 | 2009-06-26 | Dissolved | NORTH SIOUX CITY |
| Muktown Capital LLC | DL288468 | 2024-12-09 | Active | BELLEVUE |
| Mukwa Enterprise LLC | DL244974 | 2023-02-22 | Dissolved | Lennox |
| Mula Design LLC | FL234166 | 2022-09-07 | Inactive | YORK |
| Mulberi LLC | DL274706 | 2024-05-09 | Active | WATERTOWN |
| Mulberry Creek Farm LLC | DL144435 | 2018-02-23 | Inactive | Elk Point |
| MULBERRY LANE FARM ENTERPRISES, LLC | DL027763 | 2012-04-04 | Dissolved | COLMAN |
| Mulberry Market LLC | DL234221 | 2022-09-08 | Inactive | Sioux Falls |
| Mulberry SD Strategic, Inc. | DB320651 | 2026-02-12 | Active | Long Beach, CA 90804 |
| MULBERRY SHIELD AGENCY INC. | FB238360 | 2022-11-10 | Active | Brooklyn |
| Mulberry Street Capital Inc. | FB329123 | 2026-05-19 | Active | Brooklyn |
| MULBERRY THAI SILKS, INC. | FB031983 | 2007-09-13 | Revoked | RICHMOND |
| MULBERRY TRUCKING, INC. | DB024679 | 1985-09-05 | Inactive | — |
| Mulcahy Nickolaus, LLC | FL166909 | 2019-07-03 | Active | Oakdale |
| Mulder & Mulder, Inc. | DB042959 | 2000-06-23 | Suspended | SIOUX FALLS |
| MULDER & SON, INC. | DB022187 | 1983-03-04 | Active | SIOUX FALLS |
| Mulder Construction LLC | DL284793 | 2024-10-09 | Active | Hartford |
| MULDER ENTERPRISES, LLC | DL048777 | 2016-06-06 | Active | Sioux Falls |
| MULDOON AG LLC | DL015733 | 2008-02-06 | Inactive | — |
| Mule Deer Ridge at Seven Sisters, LLC | DL161902 | 2019-05-01 | Inactive | HOT SPRINGS |
| MULE DRAW CAMP, LLC | DL029637 | 2012-10-09 | Active | PRAIRIE CITY |
| MULE EAR, L.L.C. | DL001719 | 1998-06-18 | Active | RAPID CITY |
| MULE HEAD RANCH LIMITED LIABILITY PARTNERSHIP | DR001699 | 2015-02-20 | Dissolved | YANKTON |
| Mule Mountain Ranch LLC | DL199381 | 2021-03-24 | Active | Hermosa |
| Mule Shoe Ranch LLC | DL265515 | 2023-12-31 | Active | Kyle |
| Mule Skinner Transport LLC | DL217190 | 2021-12-27 | Active | Armour |
| MULE-HIDE PRODUCTS CO., INC. | FB134523 | 2017-06-26 | Active | BELOIT |
| Mulefoot Ecom LLC | DL218904 | 2022-01-20 | Active | Watertown |
| MULEHEAD ESTATES, L.L.C. | DL016798 | 2008-06-24 | Dissolved | DAKOTA DUNES |