WIRELESS POWER SUPPLY DEVICE AND PARKING SUPPORT DEVICE

A wireless power supply device (100) includes a marker (M) provided closer to a side where a vehicle (200) enters when parked than a power transmission coil unit (102) housing a power transmission coil (12). The marker (M) includes at least two segments (m1, m2) not parallel to each other, and an end portion of one segment (m1) is connected to another segment (m2). The power transmission coil (12) is separated by a predetermined distance from a point of intersection (C2) of the two segments in a direction (CL1) in which the one segment (m1) extends.