Magnetic sensor and magnetic sensor device

The invention relates to a magnetic sensor and a magnetic sensor device. A magnetic sensor (10) is provided with: a non-magnetic substrate (11); an induction circuit (12) provided on the surface of the substrate (11), the induction circuit (12) including an induction unit (121) that induces a magnetic field by a magneto-impedance effect; a terminal part (13a) and a terminal part (13b) which are respectively connected with two end parts of the induction circuit (12); and a conductive folded-back member, one end portion of which is connected to the terminal portion (13a) and folded back toward the terminal portion (13b) side. 本发明涉及磁传感器及磁传感器装置。磁传感器(10)具备：非磁性的基板(11)；设置于基板(11)的表面的感应电路(12)，所述感应电路(12)包含通过磁阻抗效应来感应磁场的感应部(121)；与感应电路(12)的两个端部分别连接的端子部(13a)和端子部(13b)；和导电性的折返构件，所述折返构件的一个端部与端子部(13a)连接并朝向端子部(13b)侧折返。