A rotary connector device comprising: a rotator ; a stator that is a member configured to hold the rotator rotatably around an axis line and form an annular space (S1) around the axis line between the rotator and the stator; a rotator side connector configured to enable an electrical connection with the outside in the rotator ; a stator side connector configured to enable an electrical connection with the outside in the stator ; and a flexible cable that is a flexible flat cable configured to be housed within the annular space (S1) and electrically connected to the rotator side connector and the stator side connector, wherein the rotator includes a rotator main body that is an annular member surrounding the axis line and a connector housing section that is a space opened to the annular space (S1) and the outside of the annular space and forms a connector housing space configured to house the rotator side connector , and the connector housing section is configured to allow the rotator side connector to be held, and includes a connector holding section protruding from the rotator main body to the outside of the annular space (S1), and a cover member that is a member configured to at least partially cover the connector holding section on a peripheral surface along a direction in which the connector holding section protrudes, characterized in that a concave portion opened to an outer circumferential side is formed in the connector holding section , and the rotator side connector is held in the concave portion , the cover member is a member configured to cover the concave portion from the outer circumferential side, and the connector housing space is formed by the cover member covering the connector holding section . a rotator ; a stator that is a member configured to hold the rotator rotatably around an axis line and form an annular space (S1) around the axis line between the rotator and the stator; a rotator side connector configured to enable an electrical connection with the outside in the rotator ; a stator side connector configured to enable an electrical connection with the outside in the stator ; and a flexible cable that is a flexible flat cable configured to be housed within the annular space (S1) and electrically connected to the rotator side connector and the stator side connector, wherein the rotator includes a rotator main body that is an annular member surrounding the axis line and a connector housing section that is a space opened to the annular space (S1) and the outside of the annular space and forms a connector housing space configured to house the rotator side connector , and the connector housing section is configured to allow the rotator side connector to be held, and includes a connector holding section protruding from the rotator main body to the outside of the annular space (S1), and a cover member that is a member configured to at least partially cover the connector holding section on a peripheral surface along a direction in which the connector holding section protrudes, characterized in that a concave portion opened to an outer circumferential side is formed in the connector holding section , and the rotator side connector is held in the concave portion , the cover member is a member configured to cover the concave portion from the outer circumferential side, and the connector housing space is formed by the cover member covering the connector holding section . <EOS>