Surface acoustic wave (SAW) filter includes SAW resonators, a discharge induction pattern is provided between a ground and at least one of a signal input terminal and a signal output terminal, and the discharge induction pattern has multiple gaps that are narrower than gaps that exist inside electrode patterns of the SAW resonators. Since the discharge induction pattern has multiple gaps that are narrower than gaps that exist inside electrode patterns of the SAW resonators, it is possible to induce the electrostatic discharge without fault. The multiple gaps are provided so as to protect the SAW resonators against multiple times of electrostatic discharge.