the present invention relates to a substrate for an organic light - emitting diode , a method for manufacturing the same , and an organic light - emitting diode comprising the same , and more particularly , to a substrate for an organic light - emitting diode , the substrate having excellent productivity and manufacturing efficiency as well as an improved light extraction efficiency , a method for manufacturing the same , and an organic light - emitting diode comprising the same . to this end , the present invention provides a substrate for an organic - light emitting diode , the substrate being disposed on one side of the organic light - emitting diode from which light irradiated thereby is emitted outside , the substrate comprising : a base plate ; a light - scattering layer comprising a plurality of light - scattering particles , the light - scattering layer being formed on the base plate ; and a transparent conductive film formed on the light - scattering layer , wherein a part of , or all of the pores formed between the plurality of light - scattering particles are filled with metal oxides forming the transparent conductive film ; a method for manufacturing the same ; and an organic light - emitting diode comprising the same .