The Emmanuel d'Alzon Library provides a wide range of services for the students, faculty, and staff of Assumption College. The Library owns more than 200,000 books, subscribes to over 1,900 print and electronic periodicals, and holds over 1,300 video and audio titles. The library provides on and off campus access to electronic resources. This allows users to access the library's catalog and 80 electronic databases. Off campus use is available by authenticating with your student ID number. The library's notable collections include French language and literature, and Theology, and the Holt Library which covers Social and Rehabilitation Services.

The Library, named for Emmanuel d'Alzon, founder of the Augustinians of the Assumption, was dedicated in 1988. Today, the Library serves the 2400 undergraduate, graduate, and continuing education students of Assumption College, and is part of the greater network of the Central Massachusetts Regional Library System (CMRLS).