A compressor housing comprising: a housing main body that surrounds a compressor impeller, the housing main body having a facing surface that is located at a position on a radially outside of the compressor impeller on an inner circumferential surface of the housing main body and faces the compressor impeller; and a cylindrical sealing member that is arranged on the facing surface and is formed by a material having a free-cutting property to the compressor impeller, the sealing member is press-fitted to the facing surface of the housing main body from a side corresponding to a proximal end of the compressor impeller, the sealing member has a reduced-diameter portion formed on a leading side in a press-fitting direction of the sealing member and an enlarged-diameter portion, which is located on a trailing side in the press-fitting direction relative to the reduced-diameter portion and has a larger outer diameter than the reduced-diameter portion, the compressor housing being characterized in that the enlarged-diameter portion includes a pressing portion that is pressed against the facing surface of the housing main body in the radial direction of the sealing member, a stepped portion is formed by projecting, radially inwardly, a part of the facing surface of the housing main body, a position of the sealing member in the press-fitting direction is determined by causing a distal end face on the leading side in the press-fitting direction of the reduced-diameter portion against the stepped portion, and only the pressing portion of the enlarged-diameter portion of the sealing member comes into contact with the facing surface of the housing main body in the radial direction of the sealing member. a housing main body that surrounds a compressor impeller, the housing main body having a facing surface that is located at a position on a radially outside of the compressor impeller on an inner circumferential surface of the housing main body and faces the compressor impeller; and a cylindrical sealing member that is arranged on the facing surface and is formed by a material having a free-cutting property to the compressor impeller, the sealing member is press-fitted to the facing surface of the housing main body from a side corresponding to a proximal end of the compressor impeller, the sealing member has a reduced-diameter portion formed on a leading side in a press-fitting direction of the sealing member and an enlarged-diameter portion, which is located on a trailing side in the press-fitting direction relative to the reduced-diameter portion and has a larger outer diameter than the reduced-diameter portion, the enlarged-diameter portion includes a pressing portion that is pressed against the facing surface of the housing main body in the radial direction of the sealing member, a stepped portion is formed by projecting, radially inwardly, a part of the facing surface of the housing main body, a position of the sealing member in the press-fitting direction is determined by causing a distal end face on the leading side in the press-fitting direction of the reduced-diameter portion against the stepped portion, and only the pressing portion of the enlarged-diameter portion of the sealing member comes into contact with the facing surface of the housing main body in the radial direction of the sealing member.