An electronic device includes a foldable housing including a first surface, a second surface, and a side surface surrounding a portion of a space between the first surface and the second surface, and a speaker disposed inside the housing. The housing further includes a hinge unit, a first speaker hole formed in a partial area of the side surface, which is adjacent to the speaker, and a second speaker hole formed in a partial area of the first surface, which is adjacent to the speaker. The first speaker hole is opened and the second speaker hole is closed in a state in which the housing is unfolded, and the first speaker hole is closed and the second speaker hole is opened in a state in which the housing is folded.