| Revlon | Nova Iorque | 1932 |
| Reynolds American | Winston-Salem | 2004 |
| Ring of Honor | — | 2002 |
| Robinson Helicopter | Zamperini Field | 1973 |
| RSA Data Security | Bedford | 1986 |
| S&P Global | Rockefeller Center, Nova Iorque | — |
| Safeway | Pleasanton | 1915 |
| SAS | Cary | 1976 |
| Schlumberger | Houston | 1926 |
| Sealy Corporation | Trinity | 1881 |
| Shure | Niles | 1925 |
| Silicon Graphics | Sunnyvale, Mountain View | 9 de novembro de 1981 |
| Silver Lake | Menlo Park | 1999 |
| Six Flags | Arlington | 1961 |
| Smith & Wesson | Springfield | 1852 |
| Southern Company | Atlanta | 1945 |
| Speedway Motorsports | Concord | 1959 |
| Sprint Nextel | Overland Park | 1899 |
| Standard Oil Company | Ohio, Cleveland, Nova Iorque | 1890 |
| Staples Inc. | Framingham | 1986 |
| State Street Corporation | Boston | 1792 |
| Stratolaunch Systems | Montgomery, Seattle | 2011 |
| Stüssy, Inc. | Irvine | 1980 |
| Substack | — | 29 de novembro de 2017 |
| Subway | Milford | 28 de agosto de 1965 |
| Swift Engineering | San Clemente | 1983 |
| Sylvania Electric Products | — | 1942 |
| Synaptics | Santa Clara | 1986 |
| Synopsys | Mountain View | 1986 |
| T-Mobile US | Bellevue | 2001 |
| T. Rowe Price | Baltimore | 1937 |
| TD Ameritrade | Omaha | 1971 |
| Tenneco | Lake Forest | 1930 |
| TerraPower | Bellevue | 2008 |
| Tesoro Corporation | — | 1968 |
| Texaco | San Ramon | 1901 |
| The Hartford | Hartford, Connecticut | 1810 |
| The Kennedy/Marshall Company | Santa Mônica | 1992 |
| The NPD Group | Port Washington | 1967 |
| The Trump Organization | Trump Tower | 1923 |
| Theranos | Palo Alto | 2003 |
| Thermo Fisher Scientific | Waltham | 2006 |
| Thinking Machines Corporation | Carter's Ink Building | 1983 |
| Timberland | Stratham | 1952 |
| Time Inc. | Nova Iorque | 28 de novembro de 1922 |
| Tommy Hilfiger | Nova Iorque, Amsterdã | 1985 |
| TopCoder | São Francisco | 2001 |
| Total Nonstop Action Wrestling | Nashville | 4 de janeiro de 2024 |