| Credo Reference | Boston | 1999 |
| Crunchbase | São Francisco | julho 2007 |
| CSX Corporation | CSX Transportation Building | 1 de novembro de 1980 |
| Culligan | Rosemont | 1936 |
| Curtiss-Wright | Charlotte | 1929 |
| Cushman & Wakefield | Nova Iorque | 1917 |
| Cypress Semiconductor | São José | 1982 |
| D23 | Burbank | 2009 |
| Dahon | Los Angeles | 1982 |
| DallasNews Corporation | Dallas | 2008 |
| Danelectro | Camarillo | 1947 |
| Danjaq LLC | Santa Mônica | 1962 |
| Databricks | São Francisco | 2013 |
| DataStax | Santa Clara | abril 2010 |
| DC Universe | Burbank | 2018 |
| Dean Foods | Dallas | 1925 |
| Deep Space Industries | Mountain View | 22 de janeiro de 2013 |
| Deere & Company | Moline | 1868 |
| Del Monte Foods | São Francisco | 1886 |
| Dell | Round Rock | 7 de setembro de 2016 |
| Dell Technologies | Round Rock | 7 de setembro de 2016 |
| Depositphotos | Fort Lauderdale | 4 de novembro de 2009 |
| Diamond Multimedia | Los Angeles | 1982 |
| Diamond-Star Motors | — | outubro 1985 |
| Dickies | Fort Worth | 1918 |
| Digi-Key | Thief River Falls | 1972 |
| Digidesign | Daly City | 1984 |
| Digital Photography Review | — | 1998 |
| DigitalGlobe | Westminster | 1992 |
| Diller Scofidio + Renfro | — | 1981 |
| Disney Streaming Services | Nova Iorque | 13 de agosto de 2015 |
| Disney Television Animation | Glendale | 5 de dezembro de 1984 |
| Docusign | São Francisco | 2003 |
| Dodge & Cox | São Francisco | 1930 |
| Dolby Laboratories | São Francisco | 1965 |
| Dollar General | Goodlettsville | 1939 |
| Dollar Tree | Chesapeake | 1986 |
| DoubleTree by Hilton | McLean | 1969 |
| Dow Chemical | Midland | 1897 |
| Doyle Dane Bernbach | Chicago, São Francisco, Londres | 1949 |
| Dr Pepper Snapple Group | Plano | 7 de maio de 2008 |
| Dr. Scholl's | Chicago, Londres | 1906 |
| Drum Workshop | Oxnard | 1972 |
| Duke Energy | Charlotte | 1997 |
| Dunkin' Brands | Canton | 1950 |
| Dunlop Manufacturing | Benicia | 1965 |
| DuPont | Wilmington | 19 de julho de 1802 |
| Duracell | Chicago, Bethel | 1930 |