A vibration generating device includes a fixed body; a movable body; a support member interposed between the fixed body and the movable body and configured to support the movable body with respect to the fixed body such that the movable body is configured to vibrate in a first direction; a permanent magnet included in the movable body and having a magnetization direction in the first direction; a pole piece attached to at least one end side of the permanent magnet in the first direction and configured to generate a magnetic field extending in a second direction perpendicular to the first direction; and a coil attached to the fixed body to surround the pole piece. The pole piece is configured such that a size of the pole piece in the first direction is greater than a size of the coil in the first direction.