| ADMINIQUEST, INC. | — | 2833903 | 2000-01-26 | Suspended | COLORADO SPRINGS |
| ADMINISOURCE COMMUNICATIONS, L.P. | — | 3987369 | 2006-10-02 | Withdrawn | CARROLLTON |
| ADMINISTAFF COMPANIES, INC. | — | 2368454 | 1996-08-27 | Active | Kingwood |
| ADMINISTAFF FINANCIAL MANAGEMENT SERVICES, INC. | — | 3282837 | 2002-02-12 | Withdrawn | Kingwood |
| ADMINISTAFF OF TEXAS, INC. | — | 2288777 | 1995-08-31 | Withdrawn | KINGWOOD |
| ADMINISTRATION GROUP, LLC | — | 3783396 | 2005-05-10 | Suspended | HESSTON |
| ADMINISTRATION PLUS USA, LLC | — | 4153367 | 2007-12-28 | Suspended | DUBLIN |
| ADMINISTRATION SPECIALISTS OF OMAHA LLC | — | 4385183 | 2010-01-26 | Suspended | OMAHA |
| ADMINISTRATIVE ACCESS, L.L.C. | — | 2923118 | 2000-09-08 | Suspended | INDEPENDENCE |
| ADMINISTRATIVE ANSWERS LLC | — | 6128136 | 2006-09-20 | Suspended | LOUISBURG |
| ADMINISTRATIVE ASSOCIATES LLC | — | 8486474 | 2023-11-15 | Suspended | OVERLAND PARK |
| ADMINISTRATIVE BENEFITS, INC. | — | 3000593 | 2001-04-02 | Pending | DALLAS |
| ADMINISTRATIVE BUSINESS SERVICES, INC. | — | 1788306 | 1991-05-21 | Dissolved | PONCA CITY |
| ADMINISTRATIVE CONSULTANT SERVICE, LLC | — | 5204045 | 2018-05-30 | Withdrawn | Shawnee |
| ADMINISTRATIVE CONSULTING SERVICES, INC. | — | 2049559 | 1993-02-19 | Active | Overland Park |
| ADMINISTRATIVE CONTROLS MANAGEMENT, INC. | — | 4795704 | 2014-02-26 | Withdrawn | ANN ARBOR |
| ADMINISTRATIVE EMPLOYER SERVICES COMPANY ("AESCO") | — | 2474492 | 1997-04-18 | Suspended | OVERLAND PARK |
| ADMINISTRATIVE EMPLOYER SERVICES, INC. | — | 4823167 | 2014-05-30 | Suspended | Sterling Heights |
| ADMINISTRATIVE MANAGEMENT SERVICES, INC. | — | 2043669 | 1993-02-22 | Suspended | SHAWNEE MISSION |
| ADMINISTRATIVE MANAGEMENT SERVICES, LLC | — | 6397061 | 2010-01-26 | Suspended | OLATHE |
| ADMINISTRATIVE NURSE SPECIALISTS, INC. | — | 1827641 | 1992-02-27 | Suspended | OVERLAND PARK |
| ADMINISTRATIVE PARTNERS INTERNATIONAL, INC. | — | 2702595 | 1999-02-11 | Withdrawn | CHICAGO |
| ADMINISTRATIVE RESOURCE OPTIONS INC. | — | 6221253 | 2007-12-26 | Active | Schaumburg |
| ADMINISTRATIVE RESOURCE OPTIONS, INC. | — | 2717403 | 1999-03-24 | Pending | CHICAGO |
| ADMINISTRATIVE RESOURCES, COMPANY | — | 1740547 | 1990-05-30 | Suspended | WICHITA |
| ADMINISTRATIVE SALES, INC. | — | 2072247 | 1993-05-26 | Suspended | LAWRENCE |
| ADMINISTRATIVE SERVICES GROUP, INC. | — | 2713469 | 1999-04-02 | Merged | LEXINGTON |
| ADMINISTRATIVE SERVICES OF KANSAS, INC. | — | 840934 | 1983-12-20 | Dissolved | TOPEKA |
| ADMINISTRATIVE SERVICES ORGANIZATION LLC | — | 8759847 | 2017-08-25 | Suspended | WICHITA |
| ADMINISTRATIVE SERVICES ORGANIZATION, L.L.C. | — | 5024328 | 2016-06-08 | Dissolved | WICHITA |
| ADMINISTRATIVE SOLUTIONS, INC. | — | 3941010 | 2006-05-24 | Suspended | CHESTNUT RIDGE |
| ADMINISTRATIVE SUPPORT ASSOCIATES, INC. | — | 2217933 | 1994-12-30 | Suspended | OVERLAND PARK |
| ADMINISTRATORS FOR THE PROFESSIONS OF DELAWARE, INC. | — | 4451555 | 2010-09-23 | Suspended | LAKW SUCCESS |
| ADMINISTRIVIA, INCORPORATED | — | 777987 | 1982-12-07 | Suspended | LAKE QUIVIRA |
| ADMINONE LLC | — | 8560013 | 2024-01-04 | Dissolved | TINTON FALLS |
| ADMINONE LLC | — | 10039113 | 2025-07-10 | Active | Topeka |
| ADMINPAM INC | — | 6931448 | 2013-06-16 | Active | Amarillo |
| ADMINPROFI VA SERVICES LLC | — | 9258963 | 2018-12-31 | Suspended | LAWRENCE |
| ADMIRAL BANKS, INC. | — | 2406411 | 1996-09-27 | Withdrawn | ALSIP |
| ADMIRAL BAY (USA) INC. | — | 3756665 | 2005-03-14 | Withdrawn | CENTENNIAL |
| ADMIRAL BAY (USA) KANSAS, LLC | — | 3808938 | 2005-07-08 | Suspended | WICHITA |
| ADMIRAL CLUB, INC. | — | 987727 | 1986-07-18 | Suspended | LEAVENWORTH |
| ADMIRAL CONTRACTING INC | — | 9673856 | 2020-06-26 | Suspended | INDEPENDENCE |
| ADMIRAL CORPORATION | — | 7048275 | 1971-01-13 | Merged | CHICAGO |
| ADMIRAL CORPORATION KANSAS CITY DIVISION, INC. | — | 7002611 | 1962-12-05 | Withdrawn | CHICAGO |
| ADMIRAL DEVELOPERS INC. | — | 1009331 | 1961-05-11 | Suspended | TOPEKA |
| ADMIRAL HOME CONCEPTS, LLC | — | 6080501 | 2006-01-17 | Suspended | LENEXA |
| ADMIRAL HOME LOAN | — | 2297224 | 1995-10-18 | Withdrawn | SAN MARINO |
| ADMIRAL INVESTMENT GROUP, INC. | — | 5203823 | 2018-05-29 | Suspended | OSWEGO |
| ADMIRAL LANDSCAPE DESIGN LLC | — | 3499134 | 2003-07-18 | Suspended | Overland Park |