The Marianna Brown Dietrich College of Humanities and Social Sciences (Dietrich College) is the liberal and professional studies college and the second largest academic unit by enrollment (after the Carnegie Mellon College of Engineering) at Carnegie Mellon University in Pittsburgh, Pennsylvania, USA. The college emphasizes study through rigorous analysis and technology the behaviors, institutions, and beliefs that constitute the human experience, describing itself as “not an ordinary liberal arts school.” The college was named for Marianna Brown Dietrich, the mother of philanthropist William S. Dietrich II after his donation of $265 million to the university in 2011 – the largest single donation in Carnegie Mellon history.

The Dietrich College offers more than 60 majors and minors through its academic departments and specialized degree programs. It is committed to a balance among humanistic, scientific, and professional orientations, and to an emphasis on integrating research experience into undergraduate education. The Dietrich College General Education Program combines required courses that teach key analytical skills with a wide range of elective courses to develop foundational skills essential to effective learning throughout the college career and beyond.