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 (L) of the impeller to the throat portion within a range (B) 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 (L) to the throat portion outside the range (B) 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 (L) of the impeller to the throat portion within a range (B) 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 (L) to the throat portion outside the range (B) 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 (L) of the impeller to the throat portion within a range (B) 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 (L) to the throat portion outside the range (B) where the angular range is between 240° and 300°. <EOS>