| Ampm | — | 1978 |
| Anadarko Petroleum Corporation | The Woodlands | 1959 |
| Ancestry.com | Lehi | 1983 |
| Anchor Brewing Company | San Francisco | 1896 |
| Andrew Christian | Hollywood | 2001 |
| Anduril | California | 2017 |
| Aniplex of America | Santa Mónica | 2005 |
| ANSYS | Canonsburg | 1970 |
| Anthropic | San Francisco | 26 de enero de 2021 |
| Apollo Group | Phoenix | 1973 |
| Aramark | Filadelfia | 1959 |
| Archegos Capital Management | Manhattan | 9 de octubre de 2001 |
| ARCO | Los Ángeles | 1966 |
| Arista | Santa Clara | octubre 2004 |
| ARRIS | Suwanee | 1995 |
| Arrow Electronics | Englewood | 1935 |
| Ashland Inc. | Covington | 1924 |
| Ashton-Tate | Torrance | agosto 1980 |
| Asociación Automovilística Estadounidense | Heathrow | 1902 |
| Astrobotic Technology | Pittsburgh | noviembre 2007 |
| AT&T | Dallas | 5 de octubre de 1983 |
| Au Bon Pain | Boston | 1978 |
| Augusta National Golf Club | — | 1930 |
| Avalanche Software | Salt Lake City | 1995 |
| Avid Audio | Daly City | 1984 |
| Axalta Coating Systems | Filadelfia | 1866 |
| Baldwin Piano Company | Trumann | 1862 |
| Banana Republic | San Francisco | 1978 |
| Bank of America | Charlotte | 1784 |
| Bank of North Dakota | Bismarck | 1919 |
| Bare Knuckle Fighting Championship | Filadelfia | 2018 |
| Baskin Robbins | Canton | 1945 |
| Bausch & Lomb | Vaughan, Rochester | 1853 |
| Bausch Health | Laval, Wilmington | 1960 |
| Be Incorporated | Menlo Park | 1990 |
| Beatport | — | 2004 |
| Beats Electronics | Culver City | 2006 |
| Bechtel | Reston | 1906 |
| Beckman Coulter | Krefeld, Brea | 1935 |
| Becton Dickinson | San José, Becton, Dickinson and Company headquarters | 1897 |
| Bellator MMA | Newport Beach | 2008 |
| Berkeley Software Design | — | 1991 |
| Best Buy | Richfield | 22 de agosto de 1966 |
| Best Western Hotels & Resorts | Phoenix | 1946 |
| Bicycle | Erlanger | — |
| Bigelow Aerospace | North Las Vegas | 1999 |
| Bio-Rad Laboratories | Hercules | 1952 |
| Biogen | Cambridge | 1978 |