| A. O. Smith | Milwaukee | 1889 |
| A. T. Cross Company | Lincoln | 1846 |
| Abercrombie & Fitch | New Albany | 1892 |
| AbioMed | Danvers | 1981 |
| ACCO Brands | Lake Zurich | 1903 |
| Adient | Dublin | 31 de outubro de 2016 |
| Adobe | São José | 28 de fevereiro de 1982 |
| Air Products & Chemicals | Detroit | 1940 |
| Airbnb | São Francisco | 2008 |
| Albertsons | Boise | 1939 |
| Alcoa | Nova Iorque | 1907 |
| Alexion Pharmaceuticals | Cheshire | 1992 |
| Allen-Bradley | Milwaukee | 1903 |
| Allison Transmission | Indianápolis | 1916 |
| Allstate | Northbrook | 17 de abril de 1931 |
| Altair Engineering | Troy | 1985 |
| Amazon | Seattle | 5 de julho de 1994 |
| AMC Networks | Nova Iorque | 1980 |
| Ameren | St. Louis | 1997 |
| American Axle | Detroit | 1994 |
| American Express | Nova Iorque | 1850 |
| American International Group | Nova Iorque | 1919 |
| Ameriprise Financial | Minneapolis | 1894 |
| Amgen | Thousand Oaks | 1980 |
| Amkor Technology | Tempe | 1968 |
| Amphenol | Wallingford Center | 1932 |
| Anheuser-Busch | St. Louis | 1852 |
| Ansys Inc. | Canonsburg | 1970 |
| Apollo Group | Phoenix | 1973 |
| Apple Inc. | Cupertino | 1 de abril de 1976 |
| Applied Materials | Santa Clara | 1967 |
| Aramark | Filadélfia | 1959 |
| Arista Networks | Santa Clara | outubro 2004 |
| Arris Group | Suwanee | 1995 |
| ASICS | Kōbe | 1949 |
| Atlas Air | Purchase | 1993 |
| Automatic Data Processing | Roseland | 1949 |
| AutoNation | Fort Lauderdale | 1996 |
| Avid | Burlington | 1987 |
| Avnet | Phoenix | 1921 |
| Avon Products | Nova Iorque | 1886 |
| Bausch & Lomb | Vaughan, Rochester | 1853 |
| Bausch Health | Laval, Wilmington | 1960 |
| BBVA Argentina | Buenos Aires | 1996 |
| BEA Systems | São José | 1995 |
| BellSouth | Atlanta | 1984 |
| Bentley Systems | Exton | 1984 |
| Berkshire Hathaway | Omaha | 1839 |