Papp is a Hungarian surname. It can refer to:
Daniel S. Papp, President of Kennesaw State UniversityFrancisc Papp (born 1946), Romanian Olympic rowerGustáv Papp (1919–1997), Slovak operatic tenorJosef Papp (c. 1933 – 1989), Hungarian-American engineer accused of creating a hoaxJoseph Papp (1921–1991), American theatrical producer and directorJoseph M. Papp (born 1975), American professional cyclistKrisztina Papp (born 1982), Hungarian long distance runnerLászló Papp (1926–2003), Hungarian boxer and three-time Olympic championLászló Papp (wrestler) (1905–1989), Hungarian wrestler and 1928 Olympic silver medalistPaul 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