Rhoda Erdmann (5 December 1870 – 23 August 1935) was a German cell biologist.[1][2] Working in the early 1900s, Erdmann was a pioneer of cellular biology and one of few women in her field. Erdmann's work centered around the reproduction of protozoa, with a particular interest in tissue culture and in vitro cellular reproduction. Her work as a protozoologist earned her a position at Yale University as a lecturer at the graduate school, though her time in America was cut short by anti-German sentiment surrounding World War I. After a forcible incarceration and then deportation in 1919, Erdmann took a research position at the Institute for Cancer Research at the Charité Hospital of the Friedrich‐Wilhelms University of Berlin.