Marion Nestle (born 1936) is an American molecular biologist, nutritionist, and public health advocate.

She is the Paulette Goddard Professor of Nutrition, Food Studies, and Public Health Emerita at New York University.

[8] In 2022, the University of California Press published Slow Cooked: An Unexpected Life in Food Politics, a memoir.

[3][12] Nestle has listed Wendell Berry, Frances Moore Lappé, Joan Gussow, and Michael Jacobson as people who inspired her.

[14][6] From 1976 to 1986, Nestle was associate dean for human biology at the School of Medicine of the University of California, San Francisco.

[15] She lectured in biochemistry, biophysics, and medicine[12] and developed a teaching program for medical students in nutrition.

Nestle hoped to raise public awareness of food and its role in culture, society, and personal nutrition.

[23] In 2012, Why Calories Count: From Science to Politics (co-authored with Dr. Malden Nesheim) won a book of the year award from the International Association of Culinary Professionals (IACP).

[17] In 2016, Nestle was awarded an honorary Doctor of Humane Letters degree from Macaulay Honors College, City University of New York.

[42] In 2025, Nestle joined New York Times reporter Jancee Dunn on a grocery shopping outing to point out ultra-processed foods.