A flexible flat cable includes a plurality of conductors arranged parallel at predetermined intervals, an insulation layer covering both sides of each of the plurality of conductors, a nonwoven fabric layer on an outer surface of the insulation layer, and a shield layer on an outer surface of the nonwoven fabric layer. The nonwoven fabric layer includes a nonwoven fabric including a layer including a first fiber thread with a predetermined outer diameter and a second fiber thread with an outer diameter larger than that of the first fiber thread. A basis weight of the nonwoven fabric is 50 to 90 g/m2.