Dapp or DAPP may refer to:

People Scot Dapp (born 1951), former American football and baseball coach

Places Dapp, Alberta, a hamlet in Canada

Science and technology DAPP, a compound used as a radioligand that binds to the serotonin transporter Data Acquisition and Processing Program, former name of the US Defense Meteorological Satellite Program Decentralized application (DApp, dApp, Dapp, or dapp), a computer application Dimensional Assessment of Personality Pathology, a psychological assessment; See Schedule for Nonadaptive and Adaptive Personality Distributed application, software that is executed or run on multiple computers within a network

Other uses Dapp, character on the Japanese TV show Gekisou Sentai Carranger Development Aid from People to People, charitable organization alleged to be run by Danish confederation Tvind Dapp (card game), German dialect name for the card game of Tapp

See also Dap (disambiguation)