A manufacturing method for a temperature sensor includes a disposing step and a fixing step. The disposing step includes disposing a thermistor element so that a distal end portion of a first lead wire extends along a first side surface and passes by the first side surface, and a distal end portion of a second lead wire extends along a second side surface. The fixing step includes electrically connecting and fixing the first lead wire to a first outer electrode, and electrically connecting and fixing the second lead wire to a second outer electrode, in a state in which a first corner and a second corner are respectively supported by the first lead wire and the second lead wire.