The St. Aquinas Library at St. Alphonsa College, with a centralized Air Condition system, provides a relaxed atmosphere where students meet, study, browse, and find inspiration. It is named after Thomas Aquinas, an immensely influential Italian philosopher, a Catholic priest, and Doctor of the Church. The library has built a collection that supports the students and the curriculum with quality holdings of books and journals, online databases with millions of articles, dissertation / theses, audio / video materials and special collections. The library is committed to proactive service to students and faculty and is readily available in consulting research needs. The books related to HRD, Science Aptitude, General Knowledge, Competitive Examinations are abundantly available in the library. In addition, all departments such as Chemistry, Computer Science, Commerce, English, Physics, and Mathematics have separate departmental libraries with an impressive list of books and study materials.

The E-Library section, the institutions repository of journals and research articles supports a user-friendly learning process as well as quality research. It serves as a ‘Pierian Spring’ to students, scholars and faculty alike. The software adapted by the library simplifies quick access to bibliographies and to the availability of books. The library has a database of content based search engine employed in two touch screen computers, exclusively dedicated to the students and faculty.