A current sensor includes a pair of bus bars, a shunt resistor conductively connected between the pair of bus bars, and a housing in which the shunt resistor is built. The shunt resistor includes a body part interposed between the pair of bus bars and detection terminal parts for current detection. Each of the detection terminal parts includes a body connection portion that is connected to the body part, a tip end connection portion that is exposed from the housing and extends along a first direction, and an intermediate portion that is interposed between the body connection portion and the tip end connection portion and extends by protruding from the tip end connection portion along a second direction.