Mary Niles Maack (December 1945 – January 23, 2023) was an American librarian and scholar known for her work on comparative librarianship and the history of the book.

[2] Maack did her doctoral research in West Africa which resulted in her first book, Libraries in Senegal.

[4] She was a tenured professor at the University of Minnesota for ten years and later at UCLA in the Department of Information Studies beginning in 1986.

[7] She wrote in 2002 that she felt that "library feminism is alive and... feminist librarians are still engaged in the struggle for equalization in one profession.

"[8] Her published papers, Women in Library Education: Down the Up Staircase and Toward a History of Women in Librarianship: A Critical Analysis with Suggestions for Further Research examined the relationship between feminization and professionalism within librarianship.