A compressor comprising: a compressor unit for compressing a fluid flowing from an intake port; a casing unit for accommodating the compressor unit; an electric motor having a housing and a drive shaft connected to a rotary shaft of the compressor unit; and an electric motor support mechanism for supporting the electric motor, the electric motor support mechanism comprising: a cylindrical member that is attached to an end portion on the intake port side of the casing unit, and that is formed in a cylindrical shape around an axis line extending along the rotary shaft; a plurality of support members; and a connection member; characterized in that a plurality of support members are respectively connected to a plurality of locations on an inner peripheral surface of the cylindrical member, and extend in a radial direction from the inner peripheral surface toward the axis line; and the connection member connects a pair of the support members located adjacent to each other in a circumferential direction around the axis line, wherein the plurality of support members respectively connect a plurality of locations on an inner peripheral surface of the cylindrical member to a plurality of locations on an outer peripheral surface of the electric motor housing so that the electric motor is supported on the axis line. a compressor unit for compressing a fluid flowing from an intake port; a casing unit for accommodating the compressor unit; an electric motor having a housing and a drive shaft connected to a rotary shaft of the compressor unit; and an electric motor support mechanism for supporting the electric motor, the electric motor support mechanism comprising: a cylindrical member that is attached to an end portion on the intake port side of the casing unit, and that is formed in a cylindrical shape around an axis line extending along the rotary shaft; a plurality of support members; and a connection member; characterized in that a plurality of support members are respectively connected to a plurality of locations on an inner peripheral surface of the cylindrical member, and extend in a radial direction from the inner peripheral surface toward the axis line; and the connection member connects a pair of the support members located adjacent to each other in a circumferential direction around the axis line, wherein the plurality of support members respectively connect a plurality of locations on an inner peripheral surface of the cylindrical member to a plurality of locations on an outer peripheral surface of the electric motor housing so that the electric motor is supported on the axis line. a cylindrical member that is attached to an end portion on the intake port side of the casing unit, and that is formed in a cylindrical shape around an axis line extending along the rotary shaft; a plurality of support members; and a connection member; characterized in that a plurality of support members are respectively connected to a plurality of locations on an inner peripheral surface of the cylindrical member, and extend in a radial direction from the inner peripheral surface toward the axis line; and the connection member connects a pair of the support members located adjacent to each other in a circumferential direction around the axis line, wherein the plurality of support members respectively connect a plurality of locations on an inner peripheral surface of the cylindrical member to a plurality of locations on an outer peripheral surface of the electric motor housing so that the electric motor is supported on the axis line.