Howard Curtis Berg (born 1934) is the Herchel Smith Professor of Physics and Professor of Molecular and Cellular Biology at Harvard University, where he teaches biophysics and studies the motility of the bacterium Escherichia coli (E. coli).Berg has been a member of the Harvard University Department of Molecular and Cellular Biology since 1986 and of the Harvard University Department of Physics since 1997. He is also a member of the Rowland Institute for Science at Harvard.