It is aimed to provide a sound-absorbing material and a sound-absorbing-material equipped wiring harness capable of absorbing sound in a wide frequency range from a low frequency to a high frequency. A sound-absorbing material 1 is a laminated sheet in which a base material sheet 3 and a skin material sheet 2 having a smaller basis weight than the base material sheets 3 are laminated, the base material sheet 3 includes at least a first base material sheet 31 and a second base material sheet 32 and the skin material sheet 2 is arranged between the first and second base material sheets 31, 32. The sound-absorbing material 1 and a wiring harness 7 are integrated into a sound-absorbing-material equipped wiring harness 6.