Donal B. O'Shea is a Canadian mathematician, who is also noted for his bestselling books.

[3] He served as the fifth president of New College of Florida in Sarasota, from July 1, 2012, until June 30, 2021.

He was succeeded by Patricia Okker on July 1, 2021.

[4] Before coming to New College, he served in various roles at Mount Holyoke College, including professor of mathematics, dean of faculty, and vice president for academic affairs.

from Harvard College,[6] and received a Ph.D. in mathematics from Queen's University in Kingston, Ontario in 1981; his thesis, titled On μ-Equivalent Families of Singularities, was written under the direction of Albert John Coleman.