Howard Curtis Berg (March 16, 1934 – December 30, 2021) was the Herchel Smith Professor of Physics and Professor of Molecular and Cellular Biology at Harvard University, where he taught biophysics and studied 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 was also a member of the Rowland Institute for Science at Harvard University.