Papp is a Hungarian surname. It can refer to:
- Daniel S. Papp, President of Kennesaw State University
- 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, American cyclist convicted of doping
- Krisztina Papp (born 1982), Hungarian long distance runner
- László Papp (1926–2003), Hungarian boxer and three-time Olympic champion
- László Papp (entomologist), Hungarian entomologist and retired Curator of Diptera at the Hungarian Natural History Museum
- László Papp (1905–1989), Hungarian wrestler and 1928 Olympic silver medalist
- Paul Papp (born 1989), Romanian footballer
- Robert J. Papp, Jr., Commandant of the United States Coast Guard and admiral
- Tibor Papp (born 1944), Hungarian boxer who competed in boxing at the 1964 Summer Olympics – Flyweight