In a rotary connector where a moving body turning with the rotation and revolution of planetary gears and flat cables including inverted portions at middle portions thereof are received in a receiving space between outer and inner cylindrical bodies, a bottom plate of a stationary-side housing is provided with an annular protrusion that comes into contact with lower surfaces of the planetary gears and a hollow portion that is positioned outside the annular protrusion in a radial direction, and the hollow portion is positioned directly below in a vertical direction when the stationary-side housing is mounted on an installation portion of a vehicle. Accordingly, a foreign matter entering the receiving space falls down onto the bottom plate and is accumulated in the hollow portion. Therefore, the hindrance to the rotation of the planetary gears, when the planetary gears catch a foreign matter, can be prevented.