Abstract: There is provided a coating composition capable of forming a coating film which has excellent long-term corrosion resistance and mechanical properties such as impact resistance, ductility, hardness, and bending resistance, and also has excellent damage resistance against sliding; and a coated article having the coating film. The coating composition includes a synthetic resin binder; a multilayer carbon nanofiber subjected to surface treatment with a non-conductive substance; and a dispersion medium. Preferably, the multilayer carbon nanofiber is grafted at least at one part of a surface thereof. Preferably, the coating composition comprises 3 to 15 parts by weight of the multilayer carbon nanofiber and 10 to 300 parts by weight of the dispersion medium with respect to 100 parts by weight of the synthetic resin binder.