| Atlantic Architecture LLC | Professional services | 001782996 | 2024-12-18 | Active | DAVENPORT |
| ATLANTIC ARMORED TRANSPORT, INC. | — | 000047798 | 1988-07-26 | Revoked | — |
| Atlantic Arts Museum, Inc. | Arts and entertainment | 000548150 | 2010-08-17 | Active | WALNUT CREEK |
| ATLANTIC ASPHALT & EQUIPMENT CO., INC. | — | 000109427 | 1999-11-26 | Revoked | REVERE |
| Atlantic Associates, Inc. | — | 001037268 | 2015-01-12 | Revoked | WEST ROXBURY |
| Atlantic Associates, Inc. | — | 000001498 | 1979-08-20 | Revoked | — |
| Atlantic Associates, L.P. | Real estate and leasing | 000083447 | 1995-03-09 | Active | JOHNSTON |
| Atlantic Assurance LLC | — | 000103345 | 1998-11-06 | Revoked | CHARLOTTE |
| Atlantic Assurance of Virginia, LLC | — | 000119953 | 2001-08-17 | Canceled | WILMINGTON |
| Atlantic Attic, LLC | Retail trade | 001751038 | 2023-01-11 | Active | JAMESTOWN |
| ATLANTIC AUDIOLOGY, INC. | Health care and social assistance | 001667058 | 2016-09-27 | Active | CRANSTON |
| ATLANTIC AUTO & TRUCK SALES, INC. | — | 000083269 | 1995-03-03 | Revoked | NARRAGANSETT |
| Atlantic Auto Body Inc. | — | 000065679 | 1991-10-03 | Revoked | — |
| Atlantic Auto Electric, Inc. | — | 000035958 | 1985-09-23 | Revoked | — |
| Atlantic Auto Rentals, LLC | — | 001679788 | 2017-12-20 | Revoked | CRANSTON |
| Atlantic Auto Sales, Inc. | — | 000001499 | 1967-08-18 | Revoked | — |
| Atlantic Autocenter, LLC | Retail trade | 000104565 | 1999-01-25 | Active | CRANSTON |
| Atlantic Ave Cruisers LLC | — | 001812786 | 2026-07-18 | Active | CHARLESTOWN |
| Atlantic Avenue Mortgage, LLC | — | 001801978 | 2026-01-08 | Active | LAKE WORTH BEACH |
| Atlantic Axe Throw, LLC | — | 001722310 | 2021-04-15 | Dissolved | WEST WARWICK |
| Atlantic Baking Company LLC | — | 000101416 | 1998-07-07 | Revoked | — |
| ATLANTIC BALLOON CO., INC. | — | 000071078 | 1993-01-25 | Revoked | LINCOLN |
| ATLANTIC BAR CODE SYSTEMS, INC. | — | 000086170 | 1995-09-22 | Dissolved | WOONSOCKET |
| Atlantic Bay Contracting Co., Inc. | — | 000787615 | 2012-02-01 | Revoked | ALLSTON |
| Atlantic Bay Mortgage Group, L.L.C. | Finance and insurance | 001669872 | 2017-01-10 | Canceled | VIRGINIA BEACH |
| ATLANTIC BAY'S AUTO SALES & SERVICE, INC | — | 000144050 | 2004-11-22 | Active | PROVIDENCE |
| ATLANTIC BEACH CASINO RESORT OWNERS ASSOCIATION, INC. | Other services | 000117889 | 2001-04-11 | Active | WESTERLY |
| ATLANTIC BEACH CASINO, INC. | — | 000047085 | 1988-05-09 | Revoked | WESTERLY |
| ATLANTIC BEACH PARK, INC. | Arts and entertainment | 000001500 | 1972-04-17 | Active | WESTERLY |
| ATLANTIC BEACH SUITES II, LLC | Real estate and leasing | 000130898 | 2003-03-28 | Active | MIDDLETOWN |
| ATLANTIC BEACH SUITES, LLC | Real estate and leasing | 000102872 | 1998-10-06 | Active | MIDDLETOWN |
| Atlantic Beverage Distributors, Inc. | — | 000077262 | 1982-12-21 | Suspended | — |
| Atlantic BioHarvest LLC | — | 001806082 | 2026-03-21 | Active | NORTH SMITHFIELD |
| ATLANTIC BOILER SERVICES, INC. | — | 000035438 | 1985-08-06 | Revoked | — |
| ATLANTIC BRAIDING MACHINERY CO., INC. | — | 000001502 | 1979-04-12 | Dissolved | — |
| Atlantic Bridge & Engineering, Inc. | Construction | 000795626 | 2013-01-07 | Active | HAMPTON |
| Atlantic Brightstar, Corp. | — | 000042780 | 1987-04-29 | Revoked | — |
| ATLANTIC BROADCASTING SYSTEM, INC. | — | 000054368 | 1989-02-24 | Revoked | — |
| Atlantic Broom Service, Inc. | — | 000020615 | 1973-08-21 | Revoked | HYDE PARK |
| ATLANTIC BUCKLE COMPANY, INC. | — | 000001503 | 1983-09-09 | Revoked | — |
| ATLANTIC BUILDERS CORPORATION | — | 000094649 | 1997-04-21 | Revoked | CUMBERLAND |
| ATLANTIC BUILDERS, INC. | — | 000045319 | 1987-12-23 | Revoked | — |
| Atlantic Building & Remodeling, LLC | — | 000157807 | 2006-07-31 | Revoked | MIDDLETOWN |
| Atlantic Building and Realty, Inc. | Construction | 000272265 | 2007-11-02 | Revoked | NORTH KINGSTOWN |
| Atlantic Building Professionals, LLC | — | 000164793 | 2007-06-18 | Revoked | GRAND RAPIDS |
| ATLANTIC BUILDING SERVICES LLC | — | 000162817 | 2007-03-28 | Revoked | JOHNSTON |
| Atlantic Business Ventures Incorporated | — | 000017995 | 1954-01-04 | Revoked | PROVIDENCE |
| ATLANTIC CAPES FISHERIES, INC. | Manufacturing | 000372232 | 2008-05-07 | Active | CAPE MAY |
| ATLANTIC CAPITAL COMPANY L.L.C. | — | 001668556 | 2016-11-18 | Revoked | WARWICK |
| Atlantic Capital Management & Finance, LLP | — | 000135995 | 2003-11-12 | Expired | CRANSTON |