The purpose of the prevent invention is to provide: a thermoplastic resin sheet which has excellent mechanical strength and, despite this, has excellent conformability during molding; and a laminatedsheet and a molded object which include such thermoplastic resin sheet. The thermoplastic resin sheet comprises a thermoplastic resin comprising a polyolefin resin, a polyamide resin, and a compatibilizing agent, wherein the compatibilizing agent is a modified elastomer having a group reactive with the polyamide resin. The laminated sheet comprises a base layer comprising a polyolefin resin and the thermoplastic resin sheet bonded to one surface of the base layer. The molded object comprises a base comprising a polyolefin resin and, bonded to one surface of the base, the thermoplastic resin sheet or the laminated sheet.