An object of the present invention is to provide an electromagnetic wave attenuation film that is less likely to shift an absorption peak frequency or change in frequency and angular characteristics over time, and has light transmission and transparency imparted thereto simply and at a low cost. An electromagnetic wave attenuation film of the present invention includes a dielectric substrate having a front surface and a back surface, a mesh-like thin film conductive layer disposed on the front surface of the dielectric substrate and formed of thin-film conductor thin lines, and a mesh-like flat plate inductor disposed on the back surface and formed of thin-film conductor thin lines, A plurality of mesh-like conductive elements are included. Further, the mesh-like conductive elements may be arranged periodically, and the amount of deviation of the conductive fine line forming the mesh-like conductive element from the conductive fine line forming the mesh-like flat plate...

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