| Humana | Louisville | 1961 |
| Huntington Ingalls Industries | Newport News | 31 de março de 2011 |
| Illumina | San Diego | 1998 |
| Indian Motorcycle Company | Kings Mountain, Medina | 1901 |
| International | Lisle | 1986 |
| Interpublic Group of Companies | Nova Iorque | 1961 |
| Invesco | Atlanta | 1935 |
| Invicta Fighting Championships | Enka | 2012 |
| Invitrogen | Carlsbad | 1987 |
| Iridium | McLean | 2001 |
| ITT Corporation | Stamford | 1920 |
| Jabil | São Petersburgo | 1966 |
| Johnson & Johnson | New Brunswick | 1886 |
| Juniper Networks | Sunnyvale | 6 de fevereiro de 1996 |
| JWT | Nova Iorque | 1864 |
| Kellanova | Chicago | 19 de fevereiro de 1906 |
| KeyBank | Cleveland | 1825 |
| Kmart | Detroit | 1962 |
| Knoll | East Greenville | 1938 |
| Kohler Company | Kohler | 6 de dezembro de 1873 |
| Konecranes | Hyvinkää | 1994 |
| Kumon | Osaka | 1958 |
| Kyndryl | Nova Iorque | — |
| Las Vegas Sands | Las Vegas, Paradise | 1937 |
| Learjet | Wichita | 1962 |
| LeCroy Corporation | Chestnut Ridge | 1964 |
| Leidos | Reston | 1969 |
| Lennox International | Richardson | 1999 |
| Lexmark | Lexington | 27 de março de 1991 |
| Liberty Mutual Group | Boston | 1912 |
| Litton Industries | Milwaukee | 1953 |
| LJN Toys | Nova Iorque | 1967 |
| Lucasfilm Animation | São Francisco | 12 de maio de 2003 |
| Lycos | Waltham | 1994 |
| Mad Catz | San Diego | 1989 |
| Malwarebytes | Santa Clara | 21 de janeiro de 2008 |
| Marmot | Santa Rosa | 1974 |
| Marriott Internacional | Bethesda | 8 de outubro de 1993 |
| Martin Marietta | Bethesda | 1961 |
| Marvell Technology | Santa Clara | 1995 |
| Mastercard | Purchase | 1966 |
| McAfee | Santa Clara, São José | 1987 |
| Mead Johnson | Glenview | 1905 |
| Mentor Graphics | Wilsonville | 1981 |
| Merck Sharp and Dohme | Rahway | 1891 |
| Microchip Technology | Chandler | 1989 |
| Molson Coors Brewing Company | Chicago, Montreal | 2005 |
| MoneyGram | Dallas | 1940 |