|Born||September 20, 1946|
|Alma mater||University of Illinois, Oregon State University, University of Rhode Island|
|Employer||Scripps Institution of Oceanography, University of California, San Diego|
|Known for||Paleoceanography, Paleoclimatology|
Margaret Leinen (born September 20, 1946) is an American paleoceanographer and paleoclimatologist. Her research interests are on ocean sediments and their relationship to global biogeochemical cycles and the history of Earth's ocean and climate. In 2013, Leinen was appointed the 11th director of the Scripps Institution of Oceanography, as well as the dean of the School of Marine Sciences at the University of California, San Diego.
In 1969 Leinen received her Bachelor of Science degree in Geology from the University of Illinois, a master's in geological oceanography from Oregon State University in 1975, and her doctorate in oceanography in 1980 from the University of Rhode Island.
She was previously the Vice Provost for Marine and Environmental Programs and Dean of the Graduate School of Oceanography and College of the Environment and Life Sciences at the University of Rhode Island; Assistant Director for Geosciences and Coordinator of Environmental Research and Education at the National Science Foundation, President of the Climate Response Fund; Vice Provost for Marine and Environmental Initiatives and executive director of the Harbor Branch Oceanographic Institute of Florida Atlantic University; and President of the American Geophysical Union.
She has been elected fellow of the American Association for the Advancement of Science and of the Geological Society of America. In 2016, she was selected as a U.S. Science Envoy by the United States State Department.
- "New Vice Chancellor for Marine Sciences Creates Vision for Scripps Oceanography". Scripps Institution of Oceanography, UC San Diego. October 24, 2013. Retrieved July 1, 2014.
- "Director's Biography". Scripps Institution of Oceanography, UC San Diego. March 2014. Retrieved July 1, 2014.
- "Author Profile: M Leinen". Eos. Retrieved 2019-05-17.
- "American Association for the Advancement of Science". Archived from the original on 6 January 2015. Retrieved 13 January 2015.
- "Geological Society of America". Retrieved 13 January 2015.
- "Announcement of U.S. Science Envoys". United States Department of State. 26 February 2016. Retrieved 19 May 2016.