Motor-driven compressor

A motor-driven compressor (101, 301) to be mounted to an attachment section (62) of a vehicle, comprises: a housing (2) including inside thereof a compression mechanism that is driven by electric power, compresses a fluid suctioned from outside, and then discharges the compressed fluid; and a mounting portion (11, 311) for mounting the housing to the attachment section. The mounting portion includes: a tubular body (12); a damping member (13) provided integrally with the tubular body and formed from a resin; a fixing member (14,15,314) provided integrally with the damping member and mounting the integrated tubular body and damping member to the housing; and a fastening member (51) inserted into the tubular body for mounting the tubular body to the attachment section. The damping member is provided to be interposed between the tubular body and the fixing member, and the fixing member is provided to be interposed between the housing and the damping member. The mounting portion has a conductive member (16) that is flexible and conductive and electrically connects the tubular body and the fixing member.