Clapp may refer to:
People named Clapp or Clap:
- Clapp (surname), predominantly found in England and the United States
- Allen Clapp, an American rock singer in the band, The Orange Peels
- Althea Louise Brough Clapp, an American tennis player
- Asa Clapp, an American politician (d.1891)
- Austin Clapp, an American swimmer and water polo player
- Benjamin Clapp, American musician
- Cameron Clapp, an American disabled athlete and actor
- Cornelia Clapp, an American zoologist (d. 1934)
- Dominic Clapp, an English cricketer
- George Hubbard Clapp, an American pioneer in the aluminium industry (d. 1949)
- Gordon Clapp, an American actor
- Harold Winthrop Clapp, Australian transport administrator (d. 1952)
- James Kilton Clapp, (1897–1965) American electrical engineer and inventor
- John Clapp (artist), a professor and children's book illustrator
- John Clapp (baseball), a professional baseball player and manager (d. 1904)
- Louise Clapp, an All-American Girls Professional Baseball League player
- Margaret Clapp, an American scholar and educator (d. 1974)
- Moses E. Clapp, an American Senator from Minnesota (d. 1929)
- Nicholas Clapp, an American writer and film-maker
- Philip Greeley Clapp, an American musician and composer (d. 1954)
- Priscilla Clapp, an American diplomat
- Richard Clapp, a Canadian baseball player
- Robert Edwin Clapp, a former Canadian physician and politician
- Susannah Clapp (born 1949), a British theatre critic, writer and book editor
- Tom Clapp, Wales rugby union captain
- Verner Clapp, an American librarian and writer (d. 1972)
- George Clapp Vaillant, an American anthropologist (d. 1945)
- Louise Amelia Knapp Smith Clappe, a.k.a. "Dame Shirley", an American writer (d. 1906)
Notable places named Clapp or Clap:
- William Clapp House, in Dorchester, Massachusetts, built in 1806
- Captain Lemuel Clap House, also in Dorchester, MA, built in 1767
Miscellaneous usage
- Clapp oscillator, an oscillator invented in 1948 by James K. Clapp
- See also
- Clap (disambiguation)
- Klapp