| ADVANCED MEDICAL SPINAL CARE CENTER, P.A. | 100120758 | 1995-03-28 | Revoked | FORT SMITH |
| ADVANCED MEDICAL STAFFING SOLUTIONS, INC. | 800005447 | 2003-03-06 | Revoked | — |
| ADVANCED MEDICAL STAFFING, INC. | 100214062 | 2002-06-06 | Revoked | — |
| ADVANCED MEDICAL SUPPLY INC. | 100163620 | 1998-10-08 | Dissolved | — |
| ADVANCED MEDICAL TECHNOLOGIES CORP. | 100122084 | 1995-05-15 | Revoked | SHERWOOD |
| ADVANCED MEDICAL, LLC | 811577300 | 2025-10-21 | Active | — |
| ADVANCED MEDICINE OF THE OZARKS, LTD. | 811342973 | 2021-12-06 | Active | — |
| ADVANCED MEDSOURCE LLC | 811100765 | 2016-04-06 | Revoked | CONWAY |
| ADVANCED MERCHANT SERVICES LLC | 811561899 | 2025-07-11 | Active | — |
| ADVANCED METAL SOLUTIONS, LLC | 811331254 | 2021-09-23 | Active | — |
| ADVANCED METAL WORKS, LLC | 811171438 | 2018-06-22 | Active | CABOT |
| ADVANCED MICRO DEVICES, INC. | 811136371 | 2017-06-16 | Active | — |
| ADVANCED MICRO TARGETING, INC | 811354627 | 2022-02-09 | Active | HENDERSON |
| ADVANCED MICRO-COMPUTER SERVICES, INC. | 100111831 | 1994-04-11 | Revoked | SPRINGDALE |
| ADVANCED MICROGRAPHICS SERVICES, INC. | 100108042 | 1993-11-03 | Revoked | SPRINGDALE |
| ADVANCED MOBILE ALIGNMENT, LLC | 800058260 | 2005-05-06 | Revoked | — |
| ADVANCED MOBILE COMMUNICATIONS, INC. | 100000913 | 1986-03-12 | Revoked | — |
| ADVANCED MOBILE DETAILING LLC | 811626442 | 2026-07-20 | Active | — |
| ADVANCED MOBILITY SUPPLY, LLC | 800091397 | 2006-08-17 | Revoked | — |
| ADVANCED MOBILITY, LLC | 800053907 | 2005-03-09 | Revoked | — |
| ADVANCED MOISTURE CONTROL PROFESSIONALS, INC. | 800077820 | 2006-02-13 | Revoked | — |
| ADVANCED MONITORING SERVICES HOLDINGS, LLC | 811192260 | 2019-01-31 | Active | Springdale |
| ADVANCED MONITORING SERVICES, INC. | 800088474 | 2006-07-07 | Merged | — |
| ADVANCED MONITORING SERVICES, LLC | 811207762 | 2019-06-14 | Active | Springdale |
| ADVANCED MORTGAGE OPTIONS, INC. | 100146258 | 1997-04-15 | Dissolved | — |
| ADVANCED MOSQUITO CONTROL & TECHNOLOGY, INC. | 800089128 | 2006-07-18 | Revoked | — |
| ADVANCED MOVING AND STORAGE, INC. | 800096181 | 2006-10-25 | Revoked | — |
| ADVANCED MOVING SOLUTIONS INC. | 800151427 | 2009-03-02 | Revoked | — |
| ADVANCED MRI SERVICES, LLC | 800086657 | 2006-06-09 | Withdrawn | — |
| ADVANCED MULTIMEDIA PRODUCTS CORPORATION | 100150428 | 1997-08-28 | Merged | — |
| ADVANCED NATIONAL SOLUTIONS LLC | 811625354 | 2026-07-14 | Active | — |
| ADVANCED NATIONWIDE MESSAGING CORPORATION | 100116825 | 1994-11-02 | Merged | — |
| ADVANCED NETWORK MANAGEMENT, INC | 811457225 | 2023-09-13 | Active | — |
| ADVANCED NETWORK SOLUTIONS, L.L.C. | 100172718 | 1999-06-29 | Revoked | — |
| ADVANCED NETWORKING SPECIALISTS LLC | 811006658 | 2011-11-15 | Active | — |
| ADVANCED NEURO-SYNC TECHNOLOGIES, INC. | 800090171 | 2006-08-01 | Revoked | — |
| ADVANCED NEUROLOGY- DR. MOHAMMAD DAAIF, M.D., P.A. | 811184352 | 2018-11-07 | Revoked | — |
| ADVANCED NEUROPHYSIOLOGY, INC. | 100211544 | 2002-04-03 | Revoked | — |
| ADVANCED NURSING AND REHAB OF EL DORADO LLC | 811290650 | 2021-02-19 | Active | LINCOLNWOOD |
| ADVANCED NURSING, LLC | 811123159 | 2017-01-25 | Revoked | FAYETTEVILLE |
| ADVANCED NUTRIENTS US LLC | 811013469 | 2012-03-29 | Active | WOODLAND |
| ADVANCED OCCUPATIONAL THERAPY LLC | 811385473 | 2022-07-28 | Revoked | LITTLE ROCK |
| ADVANCED OFFICE INTERIORS, INC. | 100159845 | 1998-06-09 | Withdrawn | — |
| ADVANCED OFFICE MACHINES, L.L.C. | 100181068 | 2000-02-09 | Revoked | — |
| ADVANCED ONION, INC. | 811216087 | 2019-08-29 | Active | MONTEREY |
| ADVANCED ORBITAL TECHNOLOGY, INC. | 100198307 | 2001-04-25 | Revoked | — |
| ADVANCED ORGANIC, LLC | 800115111 | 2007-07-27 | Revoked | — |
| ADVANCED ORGANICS, INC. | 100146141 | 1997-04-10 | Withdrawn | — |
| ADVANCED ORGANIX AND TECHNOLOGIES, LLC | 811081762 | 2015-07-28 | Revoked | LITTLE ROCK |
| ADVANCED ORTHOPAEDIC SPECIALISTS, LLC | 800157433 | 2009-06-05 | Dissolved | — |