Provided is a motor in which the positional misalignment of a terminal cover provided to a motor body can be suppressed. In a terminal cover (7) fixed to a motor body (40), an engagement plate part (75) extends from a cover part (71), which covers a terminal part (25) on a lateral surface of the motor body (40), to a position overlapping an end surface (12) on a counter-output side (L2) of the motor body (40). The engagement plate part (75) is provided with an engagement recess (750) in which a projection (17) on the end surface (12) on the counter-output side (L2) of the motor body (40) is fitted. Thus, even when external force is applied to the terminal cover (7), the terminal cover (7) is less likely to be subjected to positional misalignment. The engagement recess (750) is groove shaped, and the projection (17) is fitted to an end part, in the extending direction, of the engagement recess (750) formed in a groove shape.