The present invention provides a rotary connector device capable of suppressing the ingress of foreign matter into a housing space through a portion corresponding to an engaging means where an affixed-side ring plate and an outer cylinder oppose each other. A rotator 10, which is configured from an annular top plate 11 and a cylindrical inner circumferential part 12, and a stator 20, which is configured by assembling an annular stator body 21 and a cylindrical sub stator 22, are assembled in a manner allowing for mutual rotation in both clockwise and counterclockwise directions. An SRC 1 thathouses a flat cable F coiled inside of a housing space S formed therein is provided with: a stator engaging section 23 configured so as to allow for a frame-like engaging section 231 that extends fromthe stator body 21 to engage with a protruding engaging section 232 that is formed on the sub stator 22; and a raised-and-recessed fitting section 25 that suppresses the ingress of foreign matter into the containment space S. The raised-and-recessed fitting section 25 is disposed on an opposing portion 24 that accommodates the stator engaging section 23.