A decorative laminate formed by pressing together, under heat, a decorative layer and a core layer, the decorative layer comprising: a decorative paper; and a thermosetting resin, the core layer comprising a prepreg, the prepreg comprising: a fibrous base material; and a slurry; wherein the slurry comprises: an organic resin component; and an inorganic filler comprising: endothermic metal hydroxide; and/or an inorganic substance other than the endothermic metal hydroxide, the slurry being impregnated into the fibrous base material, an average particle diameter of the inorganic filler being 0.04 μm or more and less than 50 μm, the inorganic filler comprising: a small particle diameter filler having a first average particle diameter; a medium particle diameter filler having a second average particle diameter larger than the first average particle diameter; and a large particle diameter filler having a third average particle diameter larger than the second average particle diameter, wherein the first average particle diameter of the small particle diameter filler is 0.04 μm or more and less than 4 μm, the second average particle diameter of the medium particle diameter filler is 4 μm or more and less than 12 μm, and the third average particle diameter of the large particle diameter filler is 12 μm or more and less than 50 μm, and wherein the second average particle diameter of the medium particle diameter filler and the third average particle diameter of the large particle diameter filler are arithmetic average diameters calculated based on particle size distribution, determined as volume distribution and detected by a laser diffraction/scattering method, and wherein the first average particle diameter of the small particle diameter filler is obtained by measuring particle diameters of 100 particles of the inorganic filler with an electron microscope and averaging out the measured particle diameters. the decorative layer comprising: a decorative paper; and a thermosetting resin, a decorative paper; and a thermosetting resin, the core layer comprising a prepreg, the prepreg comprising: a fibrous base material; and a slurry; wherein the slurry comprises: an organic resin component; and an inorganic filler comprising: endothermic metal hydroxide; and/or an inorganic substance other than the endothermic metal hydroxide, a fibrous base material; and a slurry; wherein the slurry comprises: an organic resin component; and an inorganic filler comprising: endothermic metal hydroxide; and/or an inorganic substance other than the endothermic metal hydroxide, an organic resin component; and an inorganic filler comprising: endothermic metal hydroxide; and/or an inorganic substance other than the endothermic metal hydroxide, endothermic metal hydroxide; and/or an inorganic substance other than the endothermic metal hydroxide, the slurry being impregnated into the fibrous base material, an average particle diameter of the inorganic filler being 0.04 μm or more and less than 50 μm, the inorganic filler comprising: a small particle diameter filler having a first average particle diameter; a medium particle diameter filler having a second average particle diameter larger than the first average particle diameter; and a large particle diameter filler having a third average particle diameter larger than the second average particle diameter, a small particle diameter filler having a first average particle diameter; a medium particle diameter filler having a second average particle diameter larger than the first average particle diameter; and a large particle diameter filler having a third average particle diameter larger than the second average particle diameter, wherein the first average particle diameter of the small particle diameter filler is 0.04 μm or more and less than 4 μm, the second average particle diameter of the medium particle diameter filler is 4 μm or more and less than 12 μm, and the third average particle diameter of the large particle diameter filler is 12 μm or more and less than 50 μm, and wherein the second average particle diameter of the medium particle diameter filler and the third average particle diameter of the large particle diameter filler are arithmetic average diameters calculated based on particle size distribution, determined as volume distribution and detected by a laser diffraction/scattering method, and wherein the first average particle diameter of the small particle diameter filler is obtained by measuring particle diameters of 100 particles of the inorganic filler with an electron microscope and averaging out the measured particle diameters.