Irving Singer (December 24, 1925 – February 1, 2015) was an American professor of philosophy who was on the faculty of the Massachusetts Institute of Technology for 55 years and wrote over 20 books. He was the author of books on various topics, including cinema, love, sexuality, and the philosophy of George Santayana. He also wrote on the subject of film, including writings about the work of film directors Ingmar Bergman, Alfred Hitchcock.