William Howell Quillian is an American literary critic and James Joyce scholar. He is Professor Emeritus of English at Mount Holyoke College.
Quillian graduated with an A.B. in English from Princeton University in 1965 after completing a senior thesis titled "The Name of Adam: A Study of Henry Miller." He then received a B.A. and M.A. from Cambridge University in 1973 and returned to Princeton for graduate studies. He received a Ph.D. from Princeton University in 1975 after completing a doctoral dissertation titled "Prince Hamlet in the age of modernism: James Joyce and T.S. Eliot."
He has also been involved with Michael Groden's group in the envisioning and development of Joyce's Ulysses as hypertext and hypermedia as well as other aspects of the digital humanities.