| Titleist | Fairhaven | 1932 |
| TiVo Corporation | Santa Clara, San José | 1983 |
| Tivoli Audio | Boston | 2000 |
| TJX Companies | Framingham | 1956 |
| TKO Group Holdings | Nueva York | 12 de septiembre de 2023 |
| Todd-AO | Hollywood | 1953 |
| Tommy Hilfiger | Nueva York, Ámsterdam | 1985 |
| TopCoder | San Francisco | 2001 |
| Torneo de Washington | — | 1969 |
| Touchstone Television | California | 4 de diciembre de 2014 |
| Tower Records | Sacramento | 1960 |
| Transmeta | Santa Clara | 1995 |
| Trek Bicycle Corporation | Waterloo | 1976 |
| Trimark Pictures | Santa Mónica | 1985 |
| Truist Financial | Charlotte | 1872 |
| TRW Automotive | — | — |
| Tumi Inc. | Edison | 1975 |
| Turner Broadcasting System | Centro CNN | 1970 |
| Turner Construction | Nueva York | 1902 |
| Turner Entertainment | Estados Unidos | 4 de agosto de 1986 |
| Two Steps from Hell | Los Ángeles | 2006 |
| U.S. Bancorp | Minneapolis | 1850 |
| Uber | San Francisco | marzo 2009 |
| UGG | Goleta | 1978 |
| Ultimate Pro Wrestling | California | 1998 |
| Undead Labs | Seattle | 23 de noviembre de 2009 |
| Under Armour | Baltimore | 1996 |
| Underwood Typewriter Company | Nueva York | 1875 |
| Unimation | — | 1962 |
| United Fruit Company | Nueva Orleans | 1899 |
| United Parcel Service | Sandy Springs | 28 de agosto de 1907 |
| United States Rubber Company | Naugatuck | 1892 |
| United Technologies Corporation | Hartford | 1929 |
| UnitedHealth Group | Minnetonka | 1977 |
| Unocal Corporation | Los Ángeles | 1890 |
| Uproxx | Culver City | 2008 |
| USRobotics | Schaumburg | 1976 |
| Veeva Systems | Pleasanton | 2007 |
| Verizon Communications | Nueva York | 16 de junio de 2000 |
| Viacom | One Astor Plaza | 31 de diciembre de 2005 |
| Viacom Enterprises | One Astor Plaza | 3 de mayo de 1971 |
| Vicks | Cincinnati | 1890 |
| Viki | California | 2007 |
| Viking Cruises | Woodland Hills | 1997 |
| Vimeo | Nueva York | 14 de noviembre de 2004 |
| Vincent Bach Corporation | Mount Vernon | 1918 |
| Vishay Intertechnology | Malvern | 1962 |
| VIZ Media | San Francisco | 1984 |