A rotary connector device comprising: a stator; a rotor provided so as to be rotatable about a rotation axis relative to the stator; and an electrical connector attached to the rotor, wherein the stator and the rotor define a cable housing space between the stator and the rotor, the cable housing space being provided so as to surround the rotation axis, the rotor comprises: a rotor main body; and a connector housing having a connector housing space that houses the electrical connector, the connector housing comprises: a first connector holder extending from the rotor main body to opposite to the cable housing space along the rotation axis; and a second connector holder that is a separate member from the first connector holder and is attached to the first connector holder, and the second connector holder comprises: a second holder main body comprising a connector support portion that supports the electrical connector; a first wall extending from the second holder main body along an axial direction parallel to the rotation axis; and a second wall extending from the second holder main body along the axial direction and coupled to the first wall, wherein the connector housing comprises: a housing outer surface disposed so as to surround the connector housing space when viewed along the rotation axis; and a first gap provided between the first connector holder and the second connector holder and extending from the housing outer surface toward the connector housing space, wherein the first wall extends in a first direction orthogonal to the axial direction and is disposed between the connector housing space and the first gap, and the second wall extends from the first wall in a second direction that is orthogonal to the axial direction and is different from the first direction, and is disposed opposite to the first gap relative to the first wall, characterized in that the first connector holder comprises a holder coupling portion that couples the first connector holder to the second wall, wherein the second connector holder comprises a coupling protrusion provided on the second wall, and the holder coupling portion is hooked to the coupling protrusion so as to couple the first connector holder to the second connector holder. a stator; a rotor provided so as to be rotatable about a rotation axis relative to the stator; and an electrical connector attached to the rotor, wherein the stator and the rotor define a cable housing space between the stator and the rotor, the cable housing space being provided so as to surround the rotation axis, the rotor comprises: a rotor main body; and a connector housing having a connector housing space that houses the electrical connector, a rotor main body; and a connector housing having a connector housing space that houses the electrical connector, the connector housing comprises: a first connector holder extending from the rotor main body to opposite to the cable housing space along the rotation axis; and a second connector holder that is a separate member from the first connector holder and is attached to the first connector holder, and a first connector holder extending from the rotor main body to opposite to the cable housing space along the rotation axis; and a second connector holder that is a separate member from the first connector holder and is attached to the first connector holder, and the second connector holder comprises: a second holder main body comprising a connector support portion that supports the electrical connector; a first wall extending from the second holder main body along an axial direction parallel to the rotation axis; and a second wall extending from the second holder main body along the axial direction and coupled to the first wall, wherein a second holder main body comprising a connector support portion that supports the electrical connector; a first wall extending from the second holder main body along an axial direction parallel to the rotation axis; and a second wall extending from the second holder main body along the axial direction and coupled to the first wall, wherein a first gap provided between the first connector holder and the second connector holder and extending from the housing outer surface toward the connector housing space, wherein the first wall extends in a first direction orthogonal to the axial direction and is disposed between the connector housing space and the first gap, and the second wall extends from the first wall in a second direction that is orthogonal to the axial direction and is different from the first direction, and is disposed opposite to the first gap relative to the first wall, characterized in that the first connector holder comprises a holder coupling portion that couples the first connector holder to the second wall, wherein the second connector holder comprises a coupling protrusion provided on the second wall, and the holder coupling portion is hooked to the coupling protrusion so as to couple the first connector holder to the second connector holder.