An electronic device includes a first housing component including a first surface and a second surface and including a first through hole which connects the first surface and the second surface to each other, a second housing component removably attached to the first housing component, and an acoustic component located on a first side of the first through hole. The first housing component and the second housing component as being combined with each other define a passage which communicates with the outside. The first housing component includes a third surface. The second housing component includes a fourth surface. On one of the third surface and the fourth surface, a rib which protrudes to abut on the other is located. The rib is located to separate a region including the first through hole from other portions.