| Mark Hay | |
| Birth Name: | Mark Edward Hay |
| Birth Date: | 3 May 1952 |
| Citizenship: | American |
| Fields: | Ecology |
| Workplaces: | Georgia Institute of Technology |
| Education: | University of Kentucky (B.A., 1974) University of California, Irvine (Ph.D., 1980) |
| Thesis Title: | Algal ecology on a Caribbean fringing reef |
| Thesis1 Url: | and |
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| Thesis Year: | 1980 |
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| Known For: | Marine ecology Research on coral reefs |
| Awards: | Lowell Thomas Award (2015) Gilbert Morgan Smith Medal (2018) |
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Mark Edward Hay (born May 3, 1952)[1] is an American marine ecologist. He is Regents Professor and Harry and Anna Teasley Chair in the School of Biological Sciences at the Georgia Institute of Technology. A fellow of the American Association for the Advancement of Science and the Ecological Society of America, he is known for his research on coral reefs in Fiji.[2] [3] He received the Cody Award from the Scripps Institution of Oceanography in 2012,[4] the Lowell Thomas Award from the Explorers Club in 2015,[5] the Silver Medal from the International Society of Chemical Ecology in 2016, and the Gilbert Morgan Smith Medal from the National Academy of Sciences in 2018.[6] He was elected a member of both the National Academy of Sciences and the American Academy of Arts and Sciences in 2022.[7]