Magnetic sensor

The invention relates to a magnetic sensor. The present invention addresses the problem of improving the ratio of sensitivity to noise in a magnetic sensor using an induction circuit that induces a magnetic field by a magneto-impedance effect. A magnetic sensor (10) is provided with an induction circuit (12A) including an induction unit that induces a magnetic field by means of a magneto-impedance effect, and an induction circuit (12B) including an induction unit that induces a magnetic field by means of a magneto-impedance effect, and at least a part of current paths of the induction circuit (12A) and the induction circuit (12B) overlap in plan view. The respective ends are electrically connected to each other. 本发明涉及磁传感器。本发明的课题是在使用了通过磁阻抗效应来感应磁场的感应电路的磁传感器中提高灵敏度与噪声之比。本发明的解决手段为：磁传感器(10)具备包含通过磁阻抗效应来感应磁场的感应部的感应电路(12A)、和包含通过磁阻抗效应来感应磁场的感应部的感应电路(12B)，感应电路(12A)与感应电路(12B)的至少一部分电流路径在俯视观察时重叠，各自的一个端部彼此电连接。