| Avalon Hill | tabletop role-playing game publisher, board game publishing company | 1958 |
| Baltimore Museum of Art | nonprofit organization, art museum, publishing house, museum building | 1914 |
| Glenn L. Martin Company | aerospace manufacturer | 1912 |
| Johns Hopkins University | private not-for-profit educational institution, research institute, open-access publisher, private university | 1876 |
| Laureate Education | international university, open-access publisher, education company, public company | 1998 |
| Morgan State University | historically black college or university, public educational institution of the United States, university | 1867 |
| Peabody Institute | conservatory, school | 1857 |
| T. Rowe Price | business, enterprise, public company | 1937 |
| TalonSoft | video game publisher, video game developer | 1995 |
| University of Baltimore | public educational institution of the United States, public university | 1925 |
| University System of Maryland | state university system | 1988 |
| Wall Street English | business | 1972 |
| Walters Art Museum | art museum, publishing house | 1934 |