Margaret Hayes Grazier (December 19, 1916 – July 9, 1999) was an American librarian, educator, and published author in the field of Library and Information science, who specialized in school librarianship. She worked as a school librarian at various high schools and, later in her career, as a professor of library science at Wayne State University. Grazier had developed a model to guide library media specialists to become fully immersed in the entire cycle of the student's learning process, everything from storytelling to planning and evaluating curriculum. She was active in several important library organizations, including the American Library Association, and received awards for her contributions to her field of study.