▪ Abstract  During the twentieth century, African Americans participated in one of the most significant demographic events in U.S. history. Their “Great Migration” from the South to the North contributed to profound social, economic, demographic, and cultural changes in northern cities. After the Great Migration, blacks continued to move in search of opportunity as some returned to the South, while others moved to suburbs or better neighborhoods within the North. My review focuses on the Great Migration by discussing research that has examined its causes, the characteristics of the participants, the adaptation of migrants to northern society, and their impact on northern cities. I also briefly review research on return migration to the South and residential mobility by African Americans. Finally, I identify key issues and discuss possible data sources for future research.