| Tennessee Valley Authority | electricity supply company, independent agency of the United States government, business | Knoxville | 1933 |
| Terex | public company | Westport | 1925 |
| Tesla Energy | corporation, brand, organization, business, company | Fremont | — |
| Tesoro Corporation | business, gas station chain, enterprise, public company | — | 1968 |
| Texas Christian University | church college, private not-for-profit educational institution, Christian school, private university | Fort Worth | 1873 |
| Texas Southern University | historically black college or university, public educational institution of the United States, school, university | — | 1947 |
| Texas State University | public educational institution of the United States, Hispanic-serving institution, public university | — | 1899 |
| Thatgamecompany | video game developer | Santa Monica | May 15, 2006 |
| The 3DO Company | video game publisher, video game console manufacturer, video game developer | Redwood City | September 12, 1991 |
| The Asylum | film production company, film distributor, film studio | Hollywood, Los Angeles | 1997 |
| The Athletic | online newspaper, podcast network, business, sports journalism | San Francisco | January 2016 |
| The Atlantic | news website, website, magazine, business | Washington, D.C. | 1857 |
| The Avery Coonley School | school building, school | — | 1906 |
| The Bank of New York Mellon | business, enterprise | New York City | 2007 |
| The Beverly Hilton | hotel | — | 1955 |
| The Biltmore Los Angeles | hotel | — | 1923 |
| The Bitter End | concert hall, café, nightclub | — | 1961 |
| The Catholic University of America | Catholic university | — | 1887 |
| The Cheesecake Factory | restaurant chain, public company | Calabasas | 1978 |
| The Cigna Group | business, enterprise, public company | Bloomfield | 1982 |
| The Collective | video game developer | Newport Beach | 1997 |
| The Fletcher School of Law and Diplomacy | law school, university | Medford | 1933 |
| The Hershey Company | business, enterprise, public company | Hershey | 1894 |
| The Hertz Corporation | car rental company, business, enterprise, public company | Estero | 1918 |
| The Home Depot | hardware store chain, business, public company | Cobb County | 1978 |
| The Learning Company | video game developer | Cedar Rapids, San Francisco | 1980 |
| The Linq | casino, hotel | — | 2014 |
| The McClatchy Company | publishing house, business, public company | Sacramento | 1857 |
| The Mirisch Company | film production company | Los Angeles | 1957 |
| The Mosaic Company | business, public company | Plymouth | 2004 |
| The Muppets Studio | business | Los Angeles | 2004 |
| The New School | research university, private not-for-profit educational institution, educational institution, open-access publisher, private university | — | 1919 |
| The New Yorker | news magazine, publishing house, website, magazine, production team | New York City | February 21, 1925 |
| The NPD Group | business, enterprise | Port Washington | 1967 |
| The Onion | monthly newspaper, weekly newspaper, business | Chicago | 1988 |
| The Public Theater | theatre company, nonprofit organization | New York City | 1954 |
| The Rockefeller University | biological research institute, private not-for-profit educational institution, private university | New York City | 1901 |
| The Salt Lake Tribune | newspaper, 501(c)(3) organization, business | — | 1870 |
| The Travelers Companies | business, enterprise, public company | New York City | 1853 |
| The University of Texas MD Anderson Cancer Center | hospital, public educational institution of the United States, university | Houston | 1941 |
| The University of the Arts | private not-for-profit educational institution, university | Philadelphia | 1987 |
| The Vanderpump Hotel Las Vegas | hotel | — | March 2, 1979 |
| The Venetian | skyscraper, casino, hotel | — | 1997 |
| The Walt Disney Company | film production company, media conglomerate, commercial organization, business, public company | Burbank | October 16, 1923 |
| The Wharton School | business school, private university | Philadelphia | 1881 |
| The Willy Wonka Candy Company | food manufacturer, chocolaterie | Chicago | 1971 |
| Theranos | enterprise, company | Palo Alto | 2003 |
| Thermo Fisher Scientific Inc. | business, enterprise, public company | Waltham | 2006 |