Disclosed herein is a method and system for providing a ringback tone (RBT). The system for providing an RBT to a user comprises: a sound file storage for storing a sound file; a user database receiving sound selection information from a user terminal, recording a sound identifier of the sound file corresponding to the sound selection information, receiving output position information of the selected sound file from the user terminal, and recording the sound position information; and an RBT providing unit reproducing a region which corresponds to the output position information from the sound file corresponding to the sound identifier with reference to the sound file storage and the user database so as to be provided as an RBT.