The Pittsburgh railroad strike of 1877 occurred in Pittsburgh, Pennsylvania, as part of the Great Railroad Strike of 1877. It was one of many incidents of strikes, labor unrest and violence in cities across the United States, including several in Pennsylvania. Other cities dealing with similar unrest included Philadelphia, Reading, Shamokin and Scranton. The incidents followed repeated reductions in wages and sometimes increases in workload by railroad companies, during a period of economic recession following the Panic of 1873.
Between July 21 and 22 in Pittsburgh, a major center of the Pennsylvania Railroad, an estimated 61 people (including women and children) were killed in the ensuing riots; strikers burned the Union Depot and 38 other buildings at the Pennsylvania Railroad yards. In addition, more than 120 locomotives and more than 1,200 rail cars were destroyed. Due to track damage, trains did not run for a week following the cessation of violence. Estimates of losses ranged from $2 to $5 million ($50 to $140 million in 2024), according to the railroad company and an 1878 report by a state legislative investigative committee. Pittsburgh was the site of the most violence and physical damage of any city in the country during the Great Strike. Fresh troops arrived in the city on July 28, and within two days peace had been restored and the trains resumed.