Herman Howe Fussler (May 15, 1914 – March 2, 1997) was an American librarian, library administrator, teacher, writer and editor, who was a pioneer in the use of microphotography. Fussler was ranked as one of the "100 of the Most Important Leaders we had in the 20th Century" by American Libraries. Fussler served as director of the University of Chicago libraries from 1948 to 1971, was Dean of the University of Chicago Graduate Library School, from 1961 to 1963, and was instrumental in the founding of the Regenstein Library. He helped create the Center for Research Libraries. He was an elected fellow of the American Academy of Arts and Sciences and the American Association for the Advancement of Science.