An object is to more surely prevent a temperature sensor inserted into a gap between coils, from slipping out of the gap. A temperature sensor includes: a sensor element including a thermosensitive body, paired electric wires electrically connected to the thermosensitive body, and a covering body having elasticity and covering the thermosensitive body; and a housing including an abutting portion and a supporting portion extending in a direction intersecting with the abutting portion, and the housing holding the sensor element. The covering body protrudes from the abutting portion at a position separated by a predetermined distance from the supporting portion. The paired electric wires are drawn out from the housing in a direction intersecting with the covering body.