In an electronic component, a functional circuit, signal wiring electrically connected to the functional circuit, and ground wiring electrically connected to the functional circuit and electrically connected to a ground potential are located on one surface of a circuit substrate, a frame member is provided to secure a region between itself and an outer peripheral edge of a first main surface of the circuit substrate and so as to surround the functional circuit, the ground wiring extends from inside to outside the frame member, and a shield member extends from a second main surface of the circuit substrate to a region on the first main surface via the side surfaces, the shield member being electrically connected to the ground wiring in the region outside the frame member.

An acoustic wave device includes a substrate comprising one surface on which an acoustic wave generator and at least one ground pad are included; a support component formed of an insulating material and disposed on the substrate along a circumference of the acoustic wave generator; and a shielding member electrically connected to the ground pad and blocking reception or emission of electromagnetic waves at the acoustic wave generator.