A sound generator includes a housing and a vibrator. The vibrator includes at least one piezoelectric element and has at least of a part thereof inside the housing. A contact portion on the at least one piezoelectric element is configured to transmit generated vibration to an object outside of the sound generator. The at least one piezoelectric element generates vibration in response to a signal from outside the vibrator, and causes the object to vibrate and generate a sound to emit from the object.