Edwin Oakes Jordan (also spelled as Jordon; July 28, 1866 – September 2, 1936) was a prominent American bacteriologist and public health scientist. Jordan’s scientific work began in 1888 right after his graduation from the Massachusetts Institute of Technology, where he had been a distinguished pupil of Professor William Thompson Sedgwick. He built the Department of Bacteriology at the University of Chicago. He was a meticulous researcher who produced "data of indisputable accuracy". "His analytic mind and unwillingness to draw conclusions except from sufficient data" are prominent in his reports on epidemics. He co-founded the Journal of Infectious Diseases, and was editor of the Journal of Preventive Medicine. He won the Sedgwick Memorial Medal in 1934. His textbook of bacteriology has g