A centrifugal compressor comprising an impeller and a housing, wherein the housing includes: a scroll portion with a spiral scroll flow passage being formed on an outer peripheral side of the impeller; and a diffuser portion with a diffuser flow passage being formed, the diffuser flow passage extending along the scroll flow passage on a radially inner side of the scroll flow passage and communicating with the scroll flow passage, wherein the diffuser flow passage includes: an inner flow passage portion extending from an inlet portion of the diffuser flow passage to a throat portion with a flow passage height thereof decreasing, the throat portion being positioned on a radially outer side of the inlet portion; and an outer flow passage portion extending from the throat portion to an outlet portion of the diffuser flow passage, characterized in that an average distance from a rotational axis of the impeller to the throat portion within a range where an angular range in a circumferential direction of a direction of a rotation of the impeller with reference to a tongue section of the scroll portion is between 240° and 300° is greater than an average distance from the rotational axis to the throat portion outside the range where the angular range is between 240° and 300°. wherein the housing includes: a scroll portion with a spiral scroll flow passage being formed on an outer peripheral side of the impeller; and a diffuser portion with a diffuser flow passage being formed, the diffuser flow passage extending along the scroll flow passage on a radially inner side of the scroll flow passage and communicating with the scroll flow passage, a scroll portion with a spiral scroll flow passage being formed on an outer peripheral side of the impeller; and a diffuser portion with a diffuser flow passage being formed, the diffuser flow passage extending along the scroll flow passage on a radially inner side of the scroll flow passage and communicating with the scroll flow passage, wherein the diffuser flow passage includes: an inner flow passage portion extending from an inlet portion of the diffuser flow passage to a throat portion with a flow passage height thereof decreasing, the throat portion being positioned on a radially outer side of the inlet portion; and an outer flow passage portion extending from the throat portion to an outlet portion of the diffuser flow passage, characterized in that an average distance from a rotational axis of the impeller to the throat portion within a range where an angular range in a circumferential direction of a direction of a rotation of the impeller with reference to a tongue section of the scroll portion is between 240° and 300° is greater than an average distance from the rotational axis to the throat portion outside the range where the angular range is between 240° and 300°. an inner flow passage portion extending from an inlet portion of the diffuser flow passage to a throat portion with a flow passage height thereof decreasing, the throat portion being positioned on a radially outer side of the inlet portion; and an outer flow passage portion extending from the throat portion to an outlet portion of the diffuser flow passage, characterized in that an average distance from a rotational axis of the impeller to the throat portion within a range where an angular range in a circumferential direction of a direction of a rotation of the impeller with reference to a tongue section of the scroll portion is between 240° and 300° is greater than an average distance from the rotational axis to the throat portion outside the range where the angular range is between 240° and 300°.