Thomas R. Tritton is a senior fellow at the Science History Institute. He served as president of the Chemical Heritage Foundation from 2007 to 2013 and before that, from 1997 to 2007, as the president of Haverford College. He was a professor of pharmacology for 12 years each at Yale University and the University of Vermont. At Vermont he also served as deputy director of the Vermont Comprehensive Cancer Center and as vice provost of the university. Tritton is a cancer chemotherapy research expert with over 150 publications and whose work was continuously funded by the American Cancer Society and the National Institutes of Health.

In 2007, before assuming the the Institute presidency, Tritton was at Harvard University, where he held the title of president in residence at the Graduate School of Education. He worked with graduate students in higher education, wrote and taught about leadership and the college presidency, and also designed a new course on social justice. Tritton earned a BA degree from Ohio Wesleyan University and a PhD from Boston University.