Sounder

Sounder may refer to:


 * Sounder (novel), a book by William H. Armstrong
 * Sounder (film), a film based on the novel
 * Sounder, a group of wild boar or domestic pigs foraging in woodland; see List of animal names
 * Sounder, a device that transmits a signal and uses the returned signal to measure characteristics of the propagation medium
 * Echo sounder, a device used to measure water depth using sonar
 * Atmospheric sounder, also known as SODAR

in the Seattle area:
 * Sounder commuter rail, a transit system serving the Puget Sound area
 * Sounder, a member of the Seattle Sounders professional soccer teams

in telecommunications:
 * Sounder (radio). a station identifier in a radio broadcast
 * Telegraph sounder, a device for detecting operability in a telegraph
 * a Windows command line audio player for WAV format

in spacecraft
 * Atmospheric sounder, a space-borne instrument for passive atmospheric measurements