Papp is a Hungarian surname. It can refer to:
- Daniel S. Papp, president of Kennesaw State University
- George Papp, American comic book artist.
- Gustáv Papp (1919–1997), Slovak operatic tenor
- Josef Papp (c. 1933 – 1989), Hungarian-American engineer accused of creating a hoax
- Joseph Papp (1921–1991), American theatrical producer and director
- Joseph M. Papp (born 1975), American professional cyclist
- Krisztina Papp (born 1982), Hungarian long distance runner
- László Papp (1926–2003), Hungarian boxer and three-time Olympic champion
- László Papp (wrestler) (1905–1989), Hungarian wrestler and 1928 Olympic silver medalist
- Luccas Papp (Born 1992), Brazilian actor and playwright
- Paul Papp (born 1989), Romanian footballer of Hungarian origin (Pál Papp)
- Robert J. Papp Jr. (born 1952), Commandant of the United States Coast Guard and admiral