| YORK CORPORATION | — | 19550123D | 1955-03-14 | Dissolved | |
| YORK COUNTY AGRICULTURAL ASSOCIATION | — | 19460119D | 1946-06-05 | Active | |
| YORK COUNTY APPLE GROWERS COOPERATIVE | — | 19580010N | 1958-08-01 | Active | |
| YORK COUNTY BISCUIT COMPANY, INC. | — | 19530068D | 1953-01-01 | Active | |
| YORK COUNTY FARM BUREAU ASSOCIATION | — | 19530006CP | 1953-09-09 | Active | |
| YORK COUNTY FISH & GAME ASSOCIATION, INC. | — | 19390004ND | 1939-10-04 | Active | |
| YORK ENERGY CORP. | — | 19600094D | 1960-08-15 | Dissolved | |
| YORK FACTORY, INC. | — | DB034169 | 1994-03-17 | Dissolved | |
| YORK FISH AND GAME ASSOCIATION | — | 19530047ND | 1953-01-22 | Dissolved | |
| YORK FLOORING CO., INC. | — | 19630175D | 1963-07-10 | Dissolved | |
| YORK GOLF AND TENNIS CLUB | — | 19430005ND | 1943-04-26 | Active | |
| YORK HARBOR READING ROOM | — | 19190012D | 1919-10-07 | Suspended | |
| YORK HOSPITAL | — | 19040008ND | 1904-11-05 | Active | |
| YORK INSURANCE COMPANY OF MAINE | — | 18940001I | 1900-01-01 | Active | |
| YORK INTERNATIONAL CORPORATION | — | FB024742 | 2001-01-17 | Active | MILWAUKEE |
| YORK LITTLE LEAGUE, INC. | — | 19560055ND | 1956-09-10 | Active | |
| YORK MUTUAL INSURANCE COMPANY OF MAINE | — | 18940000I | 1900-01-01 | Dissolved | |
| YORK PRODUCTS INC. EMPLOYEES CREDIT UNION | — | 19590002B | 1959-06-02 | Merged | |
| YORK PUBLIC LIBRARY ASSOCIATION | — | 19220011ND | 1922-06-07 | Active | |
| YORK REALTY COMPANY | — | 19550124D | 1955-01-19 | Dissolved | |
| YORK RISK CONTROL SERVICES, LLC | — | FL042095 | 2013-10-07 | Inactive | Memphis |
| YORK RISK SERVICES GROUP, INC. | — | FB020273 | 1997-07-09 | Inactive | MEMPHIS |
| YORK STEAK HOUSE SYSTEMS, INC. | — | FB007367 | 1980-10-10 | Inactive | MINNEAPOLIS |
| YORK STREET BAPTIST CHURCH | — | 19630002N | 1963-05-17 | Active | |
| YORK TEMPLE CORPORATION | — | 19640003ND | 1964-02-20 | Active | |
| YORK UNITARIAN CHURCH | — | 19030001N | 1903-08-27 | Active | |
| YORK UTILITIES COMPANY | — | 19240023D | 1924-05-08 | Canceled | |
| YORK VILLAGE REALTY AND DEVELOPMENT | — | 19660267D | 1966-03-31 | Suspended | |
| YORK VOLUNTEER FIRE DEPT. INC. | — | 19210003ND | 1921-01-24 | Active | |
| YORK WMCS CORP. | — | FB037106 | 2013-10-15 | Inactive | BRENTWOOD |
| YORK, INC. | — | DB002491 | 1919-03-03 | Inactive | |
| YORK-CUMBERLAND ASSOCIATION FOR HANDICAPPED PERSONS | — | 19670013ND | 1967-05-27 | Active | |
| YORK-JERSEY UNDERWRITERS AGENCY, INC. | — | FB030674 | 2006-05-31 | Active | TINTON FALLS |
| YORKOTA FARMS, INC. | — | DF016291 | 1979-01-29 | Dissolved | |
| YORKSHIRE ASSOCIATES LIMITED PARTNERSHIP | — | DP338392 | 2026-09-04 | Active | BROOKINGS |
| YORKSHIRE EYE CLINIC LIMITED | — | DB013627 | 1976-06-15 | Dissolved | BROOKINGS |
| YORKSHIRE LIMITED LIABILITY COMPANY | — | DL008175 | 2004-11-10 | Dissolved | Rapid City |
| YORKTOWN CV5 LLC | — | DL027290 | 2012-02-22 | Active | Sioux Falls |
| YORKTOWN, INC. | — | DB026379 | 1987-05-14 | Dissolved | BROOKINGS |
| YORKTOWNE PAPER MILLS OF MAINE, INC. | — | 19670006F | 1967-02-15 | Withdrawn | |
| YOSEMITE BROKERAGE, INC. | — | FB028497 | 2004-05-03 | Inactive | BRIDGE CITY |
| YOSEMITE CORP. | — | DB047251 | 2003-08-22 | Dissolved | |
| YOSHIMI ENTERPRISES, LLC | — | DL035408 | 2013-10-11 | Active | SIOUX FALLS |
| YOST AGENCY, INC. | — | DB048895 | 2004-11-12 | Active | MADISON |
| YOST OIL COMPANY | — | DB024861 | 1985-11-07 | Dissolved | |
| YOTES THREE, INC. | — | DB042563 | 2000-03-15 | Inactive | |
| YOTES TWO, INC. | — | DB039902 | 1998-04-08 | Active | Sioux Falls |
| YOU & ME, INC. | — | DB028068 | 1989-01-25 | Dissolved | |
| YOU ARE COVERED, L.L.C. | — | FL006654 | 2013-01-07 | Revoked | MINNEAPOLIS |
| YOU BETCHA BUCHA, LLC | — | DL041226 | 2014-11-26 | Dissolved | SIOUX FALLS |
| YOU CAN RUN BUT YOU CANNOT HIDE INTERNATIONAL, INC. | — | FN011186 | 2010-05-21 | Inactive | ANNANDALE |
| YOU CAN TOO, INC. | — | DB043460 | 2000-12-06 | Active | WENTWORTH |
| YOU'LL NEVER WALK ALONE FOUNDATION | — | NS014112 | 2009-08-21 | Dissolved | MITCHELL |
| YOU'RE WELCOME, LLC | — | DL043758 | 2015-05-19 | Dissolved | Ellsworth AFB |
| YOU'VE BEEN FRAMED, LLC | — | DL017238 | 2008-08-27 | Active | Sioux Falls |
| YOUDECIDE.COM, INC. | — | FB025496 | 2001-09-19 | Revoked | DULUTH |
| YOUDERIAN CONSTRUCTION, INC. | — | FB038412 | 2015-03-02 | Revoked | Stanford |
| YOUHUA RESTAURANT CORP. | — | DB043970 | 2001-04-03 | Dissolved | |
| YOUNG & ASSOCIATES AGENCY, INC. | — | FB029703 | 2005-06-15 | Active | DULUTH |
| YOUNG AMERICA CORP. | — | 19230011ND | 1923-08-01 | Suspended | |
| YOUNG AMERICA, INC. | — | FB006810 | 1979-10-19 | Inactive | MINOT |
| YOUNG AND HICKEY, INCORPORATED | — | 19610192D | 1961-08-14 | Active | |
| YOUNG AT HEART, INC. | — | DB027804 | 1988-10-31 | Inactive | |
| YOUNG BROADCASTING OF RAPID CITY, INC. | — | FB018928 | 1996-05-07 | Inactive | SIOUX FALLS |
| YOUNG BROADCASTING OF SIOUX FALLS, INC. | Information | FB018927 | 1996-05-07 | Inactive | SIOUX FALLS |
| YOUNG CARTAGE CO. | — | DB024525 | 1985-06-27 | Dissolved | |
| YOUNG DOOR SERVICE, INC. | — | DB049148 | 2005-01-07 | Active | BROOKINGS |
| YOUNG ENTERPRISES, INC. | — | DB033128 | 1993-06-14 | Dissolved | PIERRE |
| YOUNG ENTHUSIASTS TAKING INITIATIVE (Y.E.T.I.) | — | NS014373 | 2010-07-21 | Dissolved | |
| YOUNG EQUIPMENT SALES & SERVICE, LLC | — | DL020431 | 2009-12-21 | Dissolved | SIOUX FALLS |
| YOUNG FARMS, LLC | — | DL012943 | 2007-01-11 | Active | RAPID CITY |
| YOUNG GENERATION, LTD. | — | DB034427 | 1994-05-31 | Dissolved | |
| YOUNG GUN CONSTRUCTION, LLC | — | DL024223 | 2011-03-29 | Active | LUDLOW |
| YOUNG GUNS FARMS, INC. | — | DB040316 | 1998-07-21 | Inactive | |
| YOUNG GUNS, LLC | — | DL028768 | 2012-07-11 | Active | ABERDEEN |
| YOUNG HART'S GOLF FOUNDATION | — | NS014633 | 2011-07-06 | Dissolved | RAPID CITY |
| YOUNG HOMESTEAD LIMITED PARTNERSHIP | — | DP001480 | 2003-09-09 | Active | |
| YOUNG LIFE | — | FN007245 | 1980-09-26 | Active | COLORADO SPRINGS |
| YOUNG MAC ENTERTAINMENT, L.L.C. | — | DL024470 | 2011-04-27 | Dissolved | SIOUX FALLS |
| YOUNG MANAGEMENT, LLC | — | DL215988 | 2021-12-08 | Active | Warner |
| YOUNG MASONRY, INC. | — | DB047781 | 2004-01-12 | Active | Sioux Falls |
| YOUNG MEN'S CHRISTIAN ASSOCIATION OF MITCHELL, SOUTH DAKOTA | — | NS005741 | 1900-01-01 | Dissolved | |
| YOUNG MEN'S CHRISTIAN ASSOCIATION OF SOUTHERN MAINE | — | 18990005ND | 1900-01-01 | Active | |
| YOUNG MENS CLUB, INC. OF MATTAWAMKEAG | — | 19540065ND | 1954-05-11 | Suspended | |
| YOUNG MOMS REACH UPWARD | — | NS008884 | 1989-01-17 | Dissolved | |
| YOUNG OPTOMETRIC, P.C. | — | DB041358 | 1999-04-29 | Dissolved | |
| YOUNG PROPERTIES, L.L.P. | — | DR000510 | 2000-12-01 | Revoked | |
| YOUNG RANCH OUTFITTERS, LLC | — | DL008607 | 2005-02-01 | Dissolved | UNION CENTER |
| YOUNG REAL ESTATE LIMITED PARTNERSHIP | — | DP001479 | 2003-09-09 | Active | |
| YOUNG RESEARCH INSTITUTE, LLC | — | DL226697 | 2022-05-10 | Active | Sioux Falls |
| YOUNG RIVER BOTTOM LIMITED PARTNERSHIP | — | DP001481 | 2003-09-11 | Active | |
| YOUNG SALES CORPORATION | — | 19670011F | 1967-03-20 | Revoked | |
| YOUNG TRAVEL SERVICE | — | 19620179D | 1962-03-26 | Dissolved | |
| YOUNG WOMEN'S CHRISTIAN ASSOCIATION OF CENTRAL MAINE | — | 18790000ND | 1900-01-01 | Active | |
| YOUNG WOMEN'S CHRISTIAN ASSOCIATION OF MOUNT DESERT ISLAND | — | 19040011ND | 1904-10-20 | Active | |
| YOUNG WOMEN'S UNITY ASSOCIATION OF THE BLACK HILLS | — | NS010812 | 1997-07-03 | Dissolved | RAPID CITY |
| YOUNG WOMENS CHRISTIAN ASSOCIATION OF MITCHELL, SOUTH DAKOTA | — | NS003056 | 1920-05-06 | Inactive | MITCHELL |
| YOUNG'S FURNITURE COMPANY, INC. | — | 19310024D | 1931-09-26 | Active | |
| YOUNG'S HARDWARE, INC. | — | DB041216 | 1999-03-26 | Inactive | |
| YOUNG'S HARDWARE, L.L.C. | — | DL001039 | 1996-11-25 | Dissolved | |
| YOUNG'S HUNTING SERVICE, INC. | Agriculture and forestry | DB048115 | 2004-04-07 | Active | HAMILL |
| YOUNG'S REFRIGERATION, INC. | — | DB019081 | 1979-09-26 | Inactive | |
| YOUNG, INC. | — | DF003521 | 1964-02-05 | Dissolved | |
| YOUNG-YANKTON, INC. | — | DB023875 | 1976-11-29 | Inactive | |
| YOUNGBERG AND SONS, INC. | — | DB003025 | 1962-12-26 | Dissolved | PIERRE |
| YOUNGBERG CONSTRUCTION, INC. | — | DB037915 | 1996-12-05 | Inactive | |
| YOUNGBERG PROPERTIES, LLC | — | DL017692 | 2008-11-10 | Inactive | YANKTON |
| YOUNGBLOOD BROTHERS, INC., GENERAL CONTRACTORS | — | FB022778 | 1999-07-23 | Revoked | ROGERS |
| YOUNGDAHL ENTERPRISES, INC. | — | DB028604 | 1989-08-04 | Dissolved | |
| YOUNGDEER INC. | — | DB034961 | 1994-11-03 | Dissolved | ABERDEEN |
| YOUNGER LIVING, INC. | — | DB011850 | 1973-09-07 | Dissolved | NORTH PORT |
| YOUNGLOVE CONSTRUCTION COMPANY | — | FB001159 | 1956-05-17 | Inactive | SIOUX CITY |
| YOUNGLOVE CONSTRUCTION, L.L.C. | — | FL001785 | 2003-11-12 | Active | SIOUX CITY |
| YOUNGMIX, INC. | — | DB057790 | 2013-05-16 | Dissolved | RAPID CITY |
| YOUNGS TRUCKING, INC. | — | DB043448 | 2000-12-04 | Dissolved | GREGORY |
| YOUNGSTROM ENTERPRISES, LLC | — | DL010139 | 2005-11-09 | Inactive | MITCHELL |
| YOUNITED INC. | — | FB311007 | 2025-10-08 | Active | New York |
| YOUNKERS, INC. | — | FB006444 | 1978-11-22 | Inactive | JACKSON |
| YOUR ANIMAL'S BEST CARE, INC. | — | FB017158 | 1994-08-08 | Inactive | GREELEY |
| YOUR BENEFITS PLUS, INC. | — | FN163752 | 2019-04-26 | Inactive | IRVING |
| YOUR CHILD'S HELP IN LEARNING AND DEVELOPMENT (YOUR C.H.I.L.D.) | — | NS005817 | 1975-07-07 | Inactive | |
| YOUR COMPUTER STAFF, INC. | — | DB039192 | 1997-10-31 | Inactive | |
| YOUR DAILY DOSE, INC. | — | DB052431 | 2007-06-04 | Dissolved | HARRISBURG |
| YOUR DESIGN, L.L.C. | — | DL020707 | 2010-02-01 | Active | SELBY |
| YOUR DIET DESIGNER, LLC | — | DL019607 | 2009-08-24 | Active | SIOUX FALLS |
| YOUR ENERGY HOLDINGS LLC | — | RS005687 | — | Active | |
| YOUR EYES ONLY OPTICAL, INC. | — | DB046156 | 2002-12-09 | Active | RAPID CITY |
| YOUR FAVORITE THINGS, INC. | — | DB025835 | 1986-11-06 | Dissolved | |
| YOUR FINAL STORE, LLC | — | DL140067 | 2017-11-21 | Active | HARRISBURG |
| YOUR HEARING NETWORK, LLC | — | FL248725 | 2023-04-14 | Active | Chadds Ford |
| YOUR HOME LOAN SOLUTION TEAM, LLC | — | FL003347 | 2007-02-21 | Revoked | ST PETERSBURG |
| YOUR HORSE STORE L.L.C. | — | DL274534 | 2024-05-07 | Active | LEAD |
| YOUR JOYFUL LIFE, LLC | — | DL008785 | 2005-03-07 | Active | Hermosa |
| YOUR NEXT HOME, LLC | — | DL015912 | 2008-03-03 | Dissolved | PARKER |
| YOUR PART-TIME CONTROLLER, LLC | — | FL259278 | 2023-09-21 | Active | PHILADELPHIA |
| YOUR PET STOP, INC. | — | DB052117 | 2007-03-09 | Dissolved | Chancellor |
| YOUR PIPE DREAMS.COM, L.L.C. | — | DL003573 | 2001-02-12 | Active | Elk Point |
| YOUR STRATEGIC BENCH, LLC | — | DL313314 | 2025-11-10 | Active | Sioux Falls |
| YOUR TIME SAVER, INC. | — | DB056076 | 2011-04-07 | Dissolved | PIERRE |
| YOUR UPTOWN CLOSET, LLC | — | DL043743 | 2015-05-18 | Active | SIOUX FALLS |
| YOUR VENDING SOLUTIONS LLC | — | DL020673 | 2010-01-26 | Dissolved | SIOUX FALLS |
| YOUR VENDING SOLUTIONS, LLC | — | DL015046 | 2007-11-09 | Inactive | SIOUX FALLS |
| YOUR VOICE FOR LIVING, INC. | — | DB034986 | 1994-11-14 | Inactive | |
| YOUR WIRELESS STORE, INC. | — | DB052849 | 2007-10-22 | Dissolved | YANKTON |
| YOUR-BEST-RATE FINANCIAL, L.L.C. | — | FL001548 | 2003-03-28 | Inactive | ATLANTA |
| YOUR-WAY BUILDERS, INC. | — | DB034188 | 1994-03-23 | Inactive | |
| YOURPLANCHOICE, LLC | — | FL160423 | 2019-02-14 | Active | CLEARWATER |
| YOUTH & FAMILY SERVICES FOUNDATION | — | NS012683 | 2004-11-19 | Active | RAPID CITY |
| YOUTH ACTIVITIES, INC. | — | NS007480 | 1982-11-23 | Active | Sioux Falls |
| YOUTH ADVOCATE PROGRAMS, INC. | — | FN030387 | 2014-09-15 | Active | Harrisburg |
| YOUTH AND FAMILY OUTREACH | — | 18500000ND | 1900-01-01 | Active | |
| YOUTH AND FAMILY SERVICES, INC. | Health care and social assistance | NS000913 | 1966-01-06 | Active | RAPID CITY |
| YOUTH CROSSROADS OUTREACH | — | NS009097 | 1990-01-30 | Inactive | |
| YOUTH DEVELOPMENT PROGRAM | — | NS008971 | 1989-05-22 | Dissolved | RAPID CITY |
| YOUTH EMPOWERMENT ACADEMY, INC. | — | NS014888 | 2012-07-19 | Dissolved | GLENDALE |
| YOUTH EMPOWERMENT ACADEMY, INC. | — | RS005680 | — | Active | |
| YOUTH ENTERPRISES, LLC | — | DL160951 | 2019-02-27 | Active | SIOUX FALLS |
| YOUTH EVANGELISM STRATEGIES, INC. | — | NS158688 | 2011-02-23 | Active | Lander |
| YOUTH EVANGELISM STRATEGIES, INC. | — | FN011239 | 2011-02-23 | Active | PORCUPINE |
| YOUTH FOR UNDERSTANDING USA, INC. | — | FN030395 | 2014-10-30 | Revoked | Saginaw |
| YOUTH FUTURE FUND, INC. | — | NS010522 | 1996-03-14 | Dissolved | |
| YOUTH IN SCIENCE RAPID CITY, INC. | — | NS014296 | 2010-04-16 | Active | RAPID CITY |
| YOUTH INSURANCE AGENCY, INC. | — | FB025176 | 2001-05-29 | Inactive | LOS ANGELES |
| YOUTH LEADERSHIP, LIFE SKILLS, AND GOLF FOR SIOUX FALLS, INC. | — | NS012860 | 2005-06-01 | Inactive | |
| YOUTH MINISTRY EVANGELISM INC. | — | NS014809 | 2012-04-06 | Active | STURGIS |
| YOUTH SERVICES INTERNATIONAL OF SOUTH DAKOTA, INC. | — | DB033555 | 1993-10-21 | Dissolved | SARASOTA |
| YOUTH SERVICES INTERNATIONAL, INC. | — | FB026591 | 2002-09-10 | Revoked | SARASOTA |
| YOUTH SERVICES INTERNATIONAL, INC. | — | FB029925 | 2005-08-31 | Inactive | SARASOTA |
| YOUTH SLOW PITCH SOFTBALL ASSOCIATION, INC. | — | NS008707 | 1988-03-31 | Active | SIOUX FALLS |
| YOUTH WITH A MISSION SOUTH DAKOTA, INC. | — | NS010338 | 1995-05-22 | Active | Wylie |
| YOUTHIX INTERNATIONAL, INC. | — | DB132731 | 2017-04-20 | Dissolved | IRVINE |
| YOUTHWORKS | — | FN011292 | 2012-02-06 | Revoked | MINNEAPOLIS |
| YOUZOOM INSURANCE SERVICES, INC. | — | FB026294 | 2002-05-28 | Inactive | SAN DIEGO |
| YOUZOOM INSURANCE SERVICES, INC. | — | FB036139 | 2012-07-30 | Active | SAN DIEGO |
| YOWAY BEAUTY LLC | — | DL286305 | 2024-11-04 | Active | Sioux Falls |
| YOYO HIBACHI, LLC | — | DL280205 | 2024-08-01 | Active | RAPID CITY |
| YP Advertising & Publishing LLC | — | FL043264 | 2015-02-13 | Revoked | TUCKER |
| YPD K-9 CORPS, INC. | — | NS010390 | 1995-08-30 | Dissolved | |
| YPR RE, LLC | — | FL270176 | 2024-03-07 | Active | Orange City |
| YPSILANTI SPECIFIC COMPANY | — | 18970004D | 1900-01-01 | Expired | |
| YRB 33rd, LLC | — | DL136473 | 2017-08-29 | Active | SIOUX FALLS |
| YRB Ventures LLC | — | DL269305 | 2024-02-26 | Active | Watertown |
| YRB Westport, LLC | — | DL136472 | 2017-08-29 | Active | SIOUX FALLS |
| YRC INC. | — | FB021343 | 1998-05-19 | Active | Overland Park |
| YREFY SLP4, LLC | — | FL287475 | 2024-11-20 | Active | Phoenix |
| YREFY SLP5, LLC | — | FL272738 | 2024-04-12 | Active | PHOENIX |
| YRnA LLC | — | DL221328 | 2022-02-23 | Active | Rapid City |
| YSB HOLDINGS LLC | — | DL327390 | 2026-04-29 | Active | Monsey |
| YSB, LLC | — | DL020904 | 2010-03-02 | Dissolved | BELLE FOURCHE |
| YSD Holdings LLC | — | DL332979 | 2026-07-07 | Active | Yankton |
| YSL Consulting LLC | — | DL257137 | 2023-08-22 | Dissolved | Sioux Falls |
| YST REHABILITATION GROUP, INC. | — | NS010607 | 1996-06-28 | Inactive | |
| YSTEBO DRY-WALL CO. | — | FB010550 | 1985-11-15 | Revoked | MOORHEAD |
| YSTERMAN BOERDERY, INC. | — | DB040507 | 1998-09-16 | Inactive | |
| YT Transcripts LLC | — | DL292299 | 2025-02-01 | Inactive | Box Elder |
| YTB INSURANCE, INC. | — | DB047262 | 2003-08-27 | Dissolved | IPSWICH |
| YTS Companies, LLC | — | FL328553 | 2026-05-12 | Active | Maple Grove |
| YTS, L.L.C. | — | DL133289 | 2017-05-09 | Active | Yankton |
| YU BLU SNI L.L.C. | — | DL005897 | 2003-05-22 | Inactive | |
| YUAN TRADING INC | — | DB245171 | 2023-02-24 | Suspended | WATERTOWN |