A motor device includes a shell, a motor body and a connection terminal. The motor body is supported on the shell and includes a power supply terminals a support and a lead wire. The power supply terminal penetrates a through hole of the support in a first direction and is pressed into a pressing portion of the connection terminal. The lead wire extends from the power supply terminal in a direction perpendicular to the first direction, or extends in a direction inclined with respect to the first direction toward a side approaching the connection terminal. A first protrusion restricting movement of the power supply terminal in the first direction toward a side opposite to the connection terminal is provided at a position on the shell facing the power supply terminal in the first direction.