An electric braking device generates a braking force at a wheel via application of a pressing force by a piston by linear motion of the piston in response to the transmission of a forward-direction rotational torque from an electric motor to a linear motion conversion mechanism. The electric braking device is provided with a one-way clutch that cuts off the transmission of a rotational torque between the electric motor and the linear motion conversion mechanism when applied with a rotational torque in a direction opposite to the forward direction and having a magnitude equal to or greater than a predetermined value.