| Boise State University | public educational institution of the United States, university | — | 1932 |
| Booking Holdings | business, enterprise, public company | Norwalk | July 1997 |
| Borders Group | business, enterprise | Ann Arbor | 1971 |
| BorgWarner | business, enterprise, public company | Auburn Hills | 1880 |
| Bose Corporation | business, enterprise | Framingham | 1964 |
| Boston Beer Company | brewery, public company | Boston | 1985 |
| Boston Dynamics | business | Waltham | November 6, 1992 |
| Boston Scientific | business, medical device company, enterprise, public company | Marlborough | June 29, 1979 |
| Botanical Society of America | nonprofit organization, open-access publisher, professional association | St. Louis | 1893 |
| Bowdoin College | liberal arts college, private not-for-profit educational institution | Brunswick | 1794 |
| Box | website, business, enterprise, public company | Redwood City | May 2009 |
| Branded Entertainment Network | photo library, advertising agency, photo agency | Seattle, Los Angeles | 1989 |
| Brandeis University | private not-for-profit educational institution, university | Waltham | October 20, 1948 |
| Brandywine Productions | film production company | United States | 1960 |
| Breeze Airways | airline | Cottonwood Heights | July 31, 2018 |
| Brewster Aeronautical Corporation | aerospace manufacturer | — | 1932 |
| Brigham Young University–Idaho | private not-for-profit educational institution, university | Rexburg | — |
| Brightstar Corporation | business | Miami | 1997 |
| Broadcom | business, enterprise | Palo Alto | 1961 |
| Broadwood and Sons | business, musical instrument manufacturing company | New York City, London | 1732 |
| Brooklyn–Manhattan Transit Corporation | business | Brooklyn | 1923 |
| Brooks Brothers | business, enterprise, brick and mortar | New York City | 1818 |
| Browning Arms Company | organization, business, enterprise | Morgan | 1927 |
| Brunswick Corporation | conglomerate, public company | Lake Forest | 1845 |
| Bryn Mawr College | private not-for-profit educational institution, women's college, university | Bryn Mawr | 1885 |
| Bucknell University | publishing house, private not-for-profit educational institution, private university | — | 1846 |
| Bucyrus International | business, enterprise, public company | South Milwaukee | 1880 |
| Budget Rent a Car | business | Chicago, Parsippany-Troy Hills | 1958 |
| Build-A-Bear Workshop | business, public company | St. Louis | 1997 |
| Bunge Limited | business, enterprise, public company | Hamilton, White Plains | 1818 |
| Burger King | fast food restaurant chain | Miami-Dade County | 1954 |
| Burlington Northern Railroad | railway company | Fort Worth, Saint Paul, Seattle | March 2, 1970 |
| Burton Snowboards | business | Burlington | 1977 |
| BVS Entertainment | film production company | Los Angeles | 2001 |
| C. F. Martin & Company | business | Nazareth | 1833 |
| C. H. Robinson Worldwide | business, public company | Eden Prairie | 1905 |
| Cadillac | automobile manufacturer | Detroit | 1902 |
| Caesars Entertainment Corporation | business, enterprise | Las Vegas, Paradise | 1937 |
| California Academy of Sciences | planetarium, nonprofit organization, natural history museum, public aquarium, academy of sciences, learned society | San Francisco | 1853 |
| California Baptist University | church college, private not-for-profit educational institution, university | — | 1950 |
| California Institute of the Arts | private not-for-profit educational institution, film school, art academy, private university | — | 1961 |
| California Lutheran University | private not-for-profit educational institution, private university | Thousand Oaks | 1959 |
| California State Polytechnic University, Humboldt | public educational institution of the United States, university | — | 1913 |
| California State University, Bakersfield | public educational institution of the United States, university | Bakersfield | 1965 |
| California State University, Chico | public educational institution of the United States, public university | Chico | 1887 |
| California State University, Dominguez Hills | public educational institution of the United States, university | Carson | 1960 |
| California State University, East Bay | public educational institution of the United States, university | Hayward | 1957 |
| California State University, Fresno | public educational institution of the United States, university | Fresno | 1911 |