Centrifugal compressor, supercharger, and method for manufacturing centrifugal compressor

Provided is a centrifugal compressor, provided with: an impeller (11) for compressing air flowing in from an intake port (11a) and discharging the air from a discharge port (11b), the impeller (11) being attached to a rotor shaft (30); an air-guiding cylinder (12) for accommodating the impeller (11); a scroll part (13) into which the compressed air discharged from the discharge port (11b) flows, the scroll part (13) being arranged farther out toward the periphery than is the air-guiding cylinder (12); and a first containment ring (14) attached to a linking position between the air-guiding cylinder (12) and the scroll part (13) so as to encircle the impeller (11) about an axis line (X) of the rotor shaft (30).