Provided is a magnetic sensor circuit in which increase of a delay time period is suppressed to be small without reducing a noise suppressing effect, in a case where there are multiple magnetic field detection axes. A magnetic sensor circuit is configured to subject detection signals obtained from multiple magnetic-field detection axes to time division processing, and includes a magnetic detector including at least two magnetic sensors, a switching circuit selecting a magnetic sensor represented by a selection signal to transmit the detection signal, a comparator, a control circuit, and output terminals. The control circuit supplies the selection signal to the switching circuit, and determines that the magnetic field is detected in a case where the number of times that a signal level of the signal supplied from the switching circuit exceeds a reference level reaches the number of set times that is set to a plurality of times.