A magnetic sensor detects a Z-axis magnetic field via a yoke and enhances the accuracy with which a magnetic field is detected. The magnetic sensor has a first magnetic field detecting element that is arranged in a plane that includes a first direction and a second direction. The second direction is perpendicular to the first direction. The first magnetic field detecting element detects a magnetic field in the first direction. In a soft magnetic body that is adjacent to the first magnetic field detecting element in the first direction, L/W is equal to or more than 10, where W is a length of the soft magnetic body in the first direction, and L is a length of the soft magnetic body in the second direction.