Provided is a resin composition, a filament and resin powder for a three-dimensional printer, a shaped object, and a production method for the shaped object, all of which make it easy to produce a shaped object and can improve, in shaping using a three-dimensional printer, the resistance to delamination of the shaped object and the resistance to warpage and shrinkage of the shaped object. A resin composition contains: inorganic fibers having an average fiber length of 1 μm to 300 μm and an average aspect ratio of 3 to 200; and a thermoplastic resin and serves as a shaping material for a three-dimensional printer.