The University of Maryland, Baltimore (UMB) is a public university in Baltimore, Maryland, United States. Founded in 1807, it is the second oldest college in Maryland and comprises some of the oldest professional schools of dentistry, law, medicine, pharmacy, social work and nursing in the United States. It is the original campus of the University System of Maryland and has a strategic partnership with the University of Maryland, College Park. Located on 71 acres (0.29 km²) on the west side of downtown Baltimore, it is part of the University System of Maryland.

In 2012, the University of Maryland, Baltimore and the flagship University of Maryland, College Park united under the MPowering the State initiative to leverage the strengths of both institutions. The University of Maryland Strategic Partnership Act of 2016 officially formalized the partnership. According to the National Science Foundation, the university spent a combined $1.1 billion on research and development in 2019, ranking it 14th overall in the nation and 8th among all public institutions.