Doppler (Doppler effect or Doppler shift) is the frequency change of a wave for observer relative to its source.
It may also refer to: Doppler (surname), a surname and a list of people with the name Christian Doppler (1803–1853), Austrian mathematician and physicist Doppler (building), a building in Seattle, home to Amazon.com's corporate headquarters Doppler (crater), a lunar impact crater Doppler (novel), a novel by Erlend Loe 3905 Doppler, an asteroid Doppler, the mascot of the WNBA's Seattle Storm
See also Dr. Doppler, the villain from Mega Man X3 Doppler beaming Doppler broadening Doppler cooling Doppler cooling limit Doppler echocardiography Doppler ultrasound, also called Doppler sonography Transcranial doppler Doppler fetal monitor Doppler LIDAR Doppler navigation set Doppler radar Doppler weather radar Doppler on wheels (DOW) Doppler spectroscopy Doppler velocity sensor Laser Doppler velocimetry Laser Doppler vibrometer Photoacoustic Doppler effect Photon Doppler velocimetry Pulse-Doppler radar Relativistic Doppler effect