| Shelby SuperCars | West Richland | 1999 |
| Shimmer Women Athletes | Illinois, Chicago, Berwyn | 6 de noviembre de 2005 |
| Shure Incorporated | Niles | 1925 |
| Siebel Systems | Austin | 1993 |
| Sigma-Aldrich | San Luis | 1976 |
| Silver Lake | Menlo Park | 1999 |
| Skechers | Manhattan Beach | 1992 |
| Smith & Wesson | Springfield | 1852 |
| Smithfield Foods | Smithfield | 1936 |
| Sonos | Santa Bárbara | 2002 |
| Southern Company | Atlanta | 1945 |
| Spectrum Brands | Middleton | 1906 |
| Staples Inc. | Framingham | 1986 |
| State Street Corporation | Boston | 1792 |
| Steak 'n Shake | Indianápolis | 1934 |
| Stellantis North America | Chrysler Auburn Hills | 28 de abril de 2009 |
| Storagetek | Louisville | 1969 |
| Stratolaunch Systems | Montgomery, Seattle | 2011 |
| Swift Engineering | San Clemente | 1983 |
| Sylvania Electric Products | — | 1942 |
| T-Mobile US | Bellevue | 2001 |
| T. Rowe Price | Baltimore | 1937 |
| Telltale Games | San Rafael | julio 2004 |
| Tenneco | Lake Forest | 1930 |
| TerraPower | Bellevue | 2008 |
| Tesla | Austin | 1 de julio de 2003 |
| The Cannon Group | Estados Unidos | 23 de octubre de 1967 |
| The Cigna Group | Bloomfield | 1982 |
| The Gillette Company | — | 28 de septiembre de 1901 |
| The Hartford | Hartford, Connecticut | 1810 |
| The NPD Group | Port Washington | 1967 |
| The Travelers Companies | Nueva York | 1853 |
| The Trump Organization | Trump Tower | 1923 |
| Tibco Software | Palo Alto | 1997 |
| Timberland | Stratham | 1952 |
| TiVo Corporation | Santa Clara, San José | 1983 |
| TJX Companies | Framingham | 1956 |
| Tommy Hilfiger | Nueva York, Ámsterdam | 1985 |
| TopCoder | San Francisco | 2001 |
| Transmeta | Santa Clara | 1995 |
| Truist Financial | Charlotte | 1872 |
| TRW Automotive | — | — |
| Turner Broadcasting System | Centro CNN | 1970 |
| Two Steps from Hell | Los Ángeles | 2006 |
| Uber | San Francisco | marzo 2009 |
| Under Armour | Baltimore | 1996 |
| Underwood Typewriter Company | Nueva York | 1875 |
| United Technologies Corporation | Hartford | 1929 |