This air intake device is configured such that: a plurality of air intake ports each include a seal surface comprising an internal wall surface that a valve body comes in contact with at a closed position for the valve body; and the angle of rotation from the open position to the closed position of the valve body relatively positioned on the drive source side is larger than the angle of rotation for a valve body relatively positioned on the opposite side to the drive source, when a plurality of valve bodies are rotated from an open position to the closed position.
