Marcia Kemper McNutt (born February 19, 1952), ForMemRS, is an American geophysicist and the 22nd president of the National Academy of Sciences (NAS) of the United States. Previously, she served as editor-in-chief of the peer-reviewed journal "Science" from 2013 to 2016. McNutt holds a visiting appointment at the Scripps Institution of Oceanography. She is a member of the National Academies of Sciences, Engineering, and Medicine advisory committee for the Division on Earth and Life Studies and the Forum on Open Science. McNutt chaired the NASEM climate intervention committee who delivered two reports in 2015.