A conductive material comprising: a π-conjugated polymer, a dopant polymer which contains one or more repeating units selected from "a1" to "a4" respectively represented by the following general formula and has a weight-average molecular weight in the range of 1,000 to 500,000, the weight-average molecular weight being measured by a gel permeation chromatography by using water, dimethyl formamide, or tetrahydrofuran as a solvent, in terms of polyethylene oxide, polyethylene glycol, or polystyrene,_and one or more metal oxide nanoparticles whose metal oxide is selected from indium-tin oxides, tin oxides, antimony-tin oxides, antimony-zinc oxides, antimony oxides, and molybdenum oxides having a particle diameter of 1 to 200 nm, wherein R 1, R 3, R 5, and R 8 independently represent a hydrogen atom or a methyl group; R 2 represents a single bond, or a linear, branched, or cyclic hydrocarbon group having 1 to 12 carbon atoms and optionally containing either or both of an ether group and an ester group, R 4 and R 6 independently represent a single bond, an ester group, or a linear, branched, or cyclic hydrocarbon group having 1 to 12 carbon atoms and optionally containing either or both of an ether group and an ester group; R 7 represents a linear or branched alkylene group having 1 to 4 carbon atoms in which 1 or 2 hydrogen atoms in R 7 may be substituted with a fluorine atom; R 9 represents a fluorine atom or a trifluoromethyl group; Z 1, Z 2, and Z 3 independently represent a single bond, a phenylene group, a naphthylene group, an ether group, or an ester group; Z 4 represents a single bond, an ether group, or an ester group; "m" is an integer of 1 to 4; and "a1", "a2", "a3", and "a4" are each a number satisfying 0≤a1≤1.0, 0≤a2≤1.0, 0≤a3≤1.0, 0≤a4≤1.0, and 0.2≤a1+a2+a3+a4≤1.0. a π-conjugated polymer, a dopant polymer which contains one or more repeating units selected from "a1" to "a4" respectively represented by the following general formula and has a weight-average molecular weight in the range of 1,000 to 500,000, the weight-average molecular weight being measured by a gel permeation chromatography by using water, dimethyl formamide, or tetrahydrofuran as a solvent, in terms of polyethylene oxide, polyethylene glycol, or polystyrene,_and one or more metal oxide nanoparticles whose metal oxide is selected from indium-tin oxides, tin oxides, antimony-tin oxides, antimony-zinc oxides, antimony oxides, and molybdenum oxides having a particle diameter of 1 to 200 nm, wherein R 1, R 3, R 5, and R 8 independently represent a hydrogen atom or a methyl group; R 2 represents a single bond, or a linear, branched, or cyclic hydrocarbon group having 1 to 12 carbon atoms and optionally containing either or both of an ether group and an ester group, R 4 and R 6 independently represent a single bond, an ester group, or a linear, branched, or cyclic hydrocarbon group having 1 to 12 carbon atoms and optionally containing either or both of an ether group and an ester group; R 7 represents a linear or branched alkylene group having 1 to 4 carbon atoms in which 1 or 2 hydrogen atoms in R 7 may be substituted with a fluorine atom; R 9 represents a fluorine atom or a trifluoromethyl group; Z 1, Z 2, and Z 3 independently represent a single bond, a phenylene group, a naphthylene group, an ether group, or an ester group; Z 4 represents a single bond, an ether group, or an ester group; "m" is an integer of 1 to 4; and "a1", "a2", "a3", and "a4" are each a number satisfying 0≤a1≤1.0, 0≤a2≤1.0, 0≤a3≤1.0, 0≤a4≤1.0, and 0.2≤a1+a2+a3+a4≤1.0.