| Fusion-io | Cottonwood Heights | 2006 |
| GameStop | Grapevine | 20 de agosto de 1980 |
| Gannett Company | Tysons Corner, Nova Iorque | 6 de outubro de 1906 |
| Gap | São Francisco | 1969 |
| Gateway | Irvine | 1 de setembro de 1985 |
| GE Healthcare | Chicago | 2004 |
| General American Transportation Corporation | Chicago | 1933 |
| General Atomics | San Diego | 1955 |
| General Atomics Aeronautical Systems | Poway | 1993 |
| Genzyme | Cambridge | 1981 |
| Giant Sparrow | Santa Mônica | 22 de março de 2009 |
| GlobalFoundries | Malta | 7 de outubro de 2008 |
| Glu Mobile | São Francisco | 2005 |
| GMT Games | Hanford | 1990 |
| GoFundMe | — | 2010 |
| Golden Boy Promotions | Los Angeles | 2002 |
| Goodyear | Akron | 29 de agosto de 1898 |
| GoTo | Boston | 2003 |
| Groq | Mountain View | 2016 |
| Grubhub | Chicago | 2004 |
| Harman Kardon | Stamford | 1953 |
| Harrah's Entertainment | Las Vegas, Paradise | 1937 |
| Hess Corporation | Nova Iorque | 1919 |
| Hill & Knowlton | Nova Iorque | 1927 |
| Honeywell | Charlotte | 23 de abril de 1885 |
| Huntington Ingalls Industries | Newport News | 31 de março de 2011 |
| Huntsman Corporation | Salt Lake City | 1982 |
| IAC | Nova Iorque | 28 de julho de 1986 |
| Illumina | San Diego | 1998 |
| Imation | Oakdale | 1996 |
| Indian Motorcycle Company | Kings Mountain, Medina | 1901 |
| InnerSloth | Redmond | 2015 |
| InnoCentive | Waltham | 2001 |
| Institute for Scientific Information | Filadélfia | 1960 |
| International | Lisle | 1986 |
| International Paper | Boston, Memphis | 1898 |
| Invesco | Atlanta | 1935 |
| Invitrogen | Carlsbad | 1987 |
| Iomega | San Diego | 1980 |
| IQVIA Holdings, Inc. | Danbury, Durham | 2016 |
| Iridium | McLean | 2001 |
| IRobot | Bedford | 1990 |
| Jabil | São Petersburgo | 1966 |
| JWT | Nova Iorque | 1864 |
| Kellanova | Chicago | 19 de fevereiro de 1906 |
| KeyBank | Cleveland | 1825 |
| Kimberly-Clark | Irving | 1928 |
| Knight's Armament Company | Titusville | 1983 |