The 1974 Baltimore municipal strike was a strike action undertaken by different groups of municipal workers in Baltimore, Maryland, United States. It was initiated by waste collectors seeking higher wages and better conditions. They were joined by sewer workers, zookeepers, prison guards, highway workers, recreation & parks workers, animal control workers, abandoned vehicles workers, and eventually by police officers. Trash piled up during the strike, and, especially with diminished police enforcement, many trash piles were set on fire. City jails were also a major site for unrest.

The Baltimore strike was prominent within a wave of public sector strikes across the United States. All of the striking workers were members of American Federation of State, County and Municipal Employees (AFSCME), a relatively radical and expanding national union. AFSCME President Jerry Wurf attained national notoriety for allegedly urging workers to "let Baltimore burn" if their demands were not met.