{{for|the German manufacturer of kitchen appliances|Constructa-Neff}}
'''Neff''' is a surname of German (also Naf, Naef, Kneff), Swiss (also Naff, Naffe, Nafe), Czech or Ashkenazi Jewish origin.
Notable people with the surname include:
*Blake Neff, former writer for Fox News *Charles D. Neff (1922–1991), American Mormon missionary and humanitarian *Christophe Neff (born 1964), Franco-German geographer *Donald Neff (1930–2015), American journalist *Dorothea Neff (1903–1986), Austrian stage and film actress *Felix Neff (1798–1829), Swiss Protestant divine and philanthropist *Francine I. Neff (1925–2010), 35th Treasurer of the United States, 1974–1977 *Garrett Neff (born 1984), American fashion model *Henry H. Neff (born 1973), American author and illustrator *Jacob H. Neff (1830–1909), American politician; lieutenant governor of California, 1899–1903 *James Neff, American writer and investigative journalist *Jay H. Neff (1854–1915), American newspaper publisher; mayor of Kansas City, 1904–1905 *Jean-Marie Neff (born 1961), French racewalker *John Neff (before 1907–1938), American college football coach *John Neff (investor) (1931–2019), American money manager *John Neff, American musician *Kristin Neff (contemporary), American psychologist *Leonard Neff (1925–2006), American psychiatrist *Lucas Neff (born 1985), American actor *Lyle Neff (born 1969), Canadian poet and journalist *Marcus Neff (1826–1896), American settler in Oregon; respondent in the U.S. Supreme Court case of ''Pennoyer v. Neff'' *Ondřej Neff (born 1945), Czech science fiction writer and journalist *Pat Morris Neff (1871–1952), American politician from Texas; governor of Texas, 1921–1925 *Prudence Neff (1887–1949), pianist and music teacher based in Chicago *Thomas Neff (1943–2024), American physicist *Tom Neff (born 1953), American film executive, director, and producer *Vladimír Neff (1909–1983), Czech writer and translator *Wallace Neff (1895–1982), American architect *Wolfgang Neff (1875–1936), Czech film director
{{surname|Neff}}
Category:German-language surnames Category:Surnames of Czech origin