| Umbrella |
| Underground Railroad |
| Union Bridge |
| Unitarian Christianity (William Ellery Channing) |
| Unitas, John |
| University of Baltimore |
| University of Baltimore Law School |
| University of Maryland |
| University of Maryland Agricultural College |
| University of Maryland Agricultural ext. service |
| University of Maryland Baltimore |
| University of Maryland Baltimore County |
| University of Maryland Dental School |
| University of Maryland Eastern Shore |
| University of Maryland Law School |
| University of Phoenix |
| University Park |
| Upper Marlboro |
| Urban Renewal, Baltimore |
| Uris, Leon |
| U.S. Army Corps of Engineers |
| U.S. Naval Academy |
