Great Notch is an unincorporated community and census-designated place (CDP) located in eastern Little Falls, in Passaic County, in the U.S. state of New Jersey. As of the 2020 census, Great Notch had a population of 3,289. It gets its name from a gap in the first of the Watchung Mountains. Located in Great Notch are parts of Montclair State University and the Great Notch Fire Company.