Sheet-like conductive member and sheet-like heater

Provided is a sheet-like conductive member (100) provided with a sheet-like structure (2) comprising a plurality of conductive linear bodies (21) arranged at intervals, the conductive linear bodies (21) having a waveform shape in which, in plan view of the sheet-like conductive member (100), a second wave having a shorter amplitude and wavelength than a virtual first wave is provided along the virtual first wave. 本发明提供片状导电构件(100)，其具备由隔开间隔排列的多个导电性线状体(21)形成的仿片状结构体(2)，其中，在俯视片状导电构件(100)时，导电性线状体(21)为波形形状，该波形形状为沿着假想的第一波设有振幅及波长比该第一波短的第二波的形状。