An electronic device is provided. The electronic device includes a housing including a front plate, a rear plate, and a lateral member surrounding a space between the front and rear plates and having at least one through-hole. The electronic device further includes a display disposed to be seen through the front plate, and a speaker structure disposed near the through-hole in the space between the display and the rear plate. The speaker structure includes a yoke disposed between the display and the rear plate and facing the display, a diaphragm disposed between the rear plate and the yoke and spaced apart from the rear plate, a magnet disposed between the yoke and the diaphragm, a speaker housing surrounding, at least in part, at least one of the diaphragm, the yoke, or the magnet and including a first opening formed toward the rear plate and a second opening formed toward the through-hole. The electronic device further includes a sealing member disposed between the speaker housing and the rear plate and surrounding the first opening when viewed from the rear plate. A sound conduit includes, between the diaphragm and the through-hole, a first space formed by the first opening, the rear plate, and the sealing member, and a second space connected to the first space through the second opening.