A sufficient balance characteristic cannot be obtained for a surface acoustic wave filter.________________________________________The surface acoustic wave filter includes a piezoelectric substrate 200, IDT electrodes 210 which are formed on the piezoelectric substrate 200 and are connected to balanced type terminals 261 and 262, IDT electrodes 220 and 230 which are formed on the piezoelectric substrate 200 and are connected to an unbalanced type terminal 271, connection electrodes 281, 282, and 291 of connecting the IDT electrodes 210, the IDT electrodes IDT electrodes 220 and 230 to the balanced type terminals 261 and 262 or the unbalanced type terminal 271, and a dielectric thin film 201 formed beetween the piezoelectric substrate 200 and the IDT electrodes 210, the IDT electrodes 220 and 230, the connection electrodes 281, 282, and 291.