Transparent resin multilayer body, and transparent substrate material and transparent protective material each using same

A resin layered body comprising:

• a layer containing a polycarbonate-based resin (A);
• a layer containing a thermoplastic resin (B) on at least one surface of the layer containing a polycarbonate-based resin (A);
• and
• a hard coating layer on a surface of the layer containing a thermoplastic resin (B) on at least one side, wherein
• the polycarbonate-based resin (A) has a glass-transition temperature of from 115° C. to 140° C.,
• the thermoplastic resin (B) comprises a methacrylic resin (C) and a styrene copolymer (D),
• a content of the methacrylic resin (C) is from 5 to 70 parts by mass and a content of the styrene copolymer (D) is from 95 to 30 parts by mass based on 100 parts by mass of a total content of the methacrylic resin (C) and the styrene copolymer (D), and
• the styrene copolymer (D) is a copolymer comprising a vinyl aromatic monomer unit (d1) in an amount of from 68 to 84 mass % and a cyclic acid anhydride monomer unit (d2) in an amount of from 16 to 32 mass %.