| Big Fish Games | Seattle | 2002 |
| Biogen Idec | Cambridge | 1978 |
| Black Diamond Equipment | Holladay | 1 de dezembro de 1989 |
| BlackRock | Nova Iorque | 1988 |
| Blinding Edge Pictures | Berwyn | 1999 |
| Blu Products | Doral, Paramount | 2009 |
| BMG Rights Management | Quartier 205 | 1 de outubro de 2008 |
| Bobcat Company | West Fargo | 1947 |
| Bongo Comics | Santa Mônica | 1993 |
| Booking Holdings | Norwalk | julho 1997 |
| BorgWarner | Auburn Hills | 1880 |
| Box | Redwood City | maio 2009 |
| Briggs & Stratton | Milwaukee | 1908 |
| Brink's | Condado de Henrico | 1859 |
| Broadcast Music Incorporated | Manhattan | 1939 |
| Brooks Brothers | Nova Iorque | 1818 |
| Browning (empresa) | Morgan | 1927 |
| Budd Company | Filadélfia | 1912 |
| Budget | Chicago, Parsippany-Troy Hills | 1958 |
| Bunge | Hamilton, White Plains | 1818 |
| Burlington | Florence | 1972 |
| Bushmaster Firearms International | Madison | 1973 |
| Cabot Corporation | Boston | 1882 |
| Calico | São Francisco | 18 de setembro de 2013 |
| Canadian Solar | — | 2001 |
| Capelli Sport | Nova Iorque | 2011 |
| Caravan Pictures | Santa Mônica | 1992 |
| Cardinal Health | Dublin | 1971 |
| Carnival Corporation & plc | Doral, Southampton, Flórida, Londres, Miami | 1972 |
| Carrier Global | Farmington | 26 de junho de 1915 |
| Case Corporation | Estados Unidos | 1842 |
| Case IH | Racine | 1984 |
| Caterpillar Inc. | Irving | 1925 |
| CBS Corporation | CBS Building | 30 de novembro de 1997 |
| CBS Radio | Nova Iorque | 1928 |
| Cedar Fair | Sandusky | 1983 |
| Celera Corporation | Rockville, Alameda | maio 1998 |
| Celestron | Torrance | 1960 |
| CF Industries | Deerfield, Deerfield | 1946 |
| Champ Car | — | 1979 |
| Charlton Comics | Derby | 1945 |
| Charter Arms | Shelton | 1964 |
| Chase Bank | Nova Iorque | 1799 |
| Chemical Bank | Midland, Nova Iorque | 1954 |
| Chicago Board of Trade | Chicago | 1848 |
| Chicago Mercantile Exchange | Chicago | 1898 |
| Chicago, Rock Island and Pacific Railroad | Chicago | 1866 |
| Chikara | Filadélfia | 2002 |