Rapp is a surname. Notable people with the surname include:
Adam Rapp (born 1968), American novelistAlfred Rapp (1933–2011), German politicianAnders Rapp (1927–1998), Swedish geomorphologistAnthony Rapp (born 1971), American stage and film artistBarbara Rapp (born 1972), Austrian artistBernard Rapp (1945–2006), French film director and television news presenterC. J. Rapp, American beverage inventorDanny Rapp (1941–1983), American musicianEmily Susan Rapp (born 1974), American author and academicGeorge Rapp (1757–1847), pietist, German-American religious leader of the Harmony SocietyJean Rapp (1771–1821), French lieutenant generalKarl Friedrich Rapp (1882–1962), German engineer, founder of Rapp Motorenwerke GmbHKatharina Rapp (born 1948), German artistLea Bayers Rapp (born 1946), American non-fiction writerMarcello Rapp, better known as "Cello Dias", bass guitarist for Against All WillMitch Rapp, fictional characterPeter Rapp (born 1983), German long jumperPhilip Rapp (1907–1996), film and television director and screenwriterRay Rapp (born 1945), a Democratic member of the North Carolina General AssemblyRichard Rapp, former New York City Ballet dancerSiegfried Rapp (1915–1982), German one-handed classical pianistTom Rapp (born 1947), American singer-songwriterVern Rapp (1928–2015), Major League Baseball manager and coach