| Birth Name: | Bernhard H. Bayerlein |
| Region: | Europe |
| Era: | Late modern and contemporary |
| School Tradition: | Frankfurt School |
| Main Interests: | Transnational communism, German-French and German-Russian relations (1920–1950), history of social movements, political movements and cultural movements, Portuguese studies, Spanish studies, comparative political science |
| Alma Mater: | Ruhr-University Bochum |
Bernhard H. Bayerlein (born 1949, in Wiesbaden, Hesse) is a German professor, historian and honorary senior researcher at the Ruhr-University Bochum. His work includes the study of transnational communism, the history of social, political and cultural movements, and of the labour movement, as well as Portuguese and Spanish studies and comparative politics, including semi-presidentialism.[1]