The present invention relates to a UV-curable hard coating paint composition and a coated article using the same. The UV-curable hard coating composition is applied to plastic materials such as polycarbonate to form a coating film excellent in material adhesiveness, abrasion resistance, and weather resistance. The coating composition of the present invention can be coated by a conventional coatingmethod. Particularly, foreign matters are less produced during a spray coating process by not containing inorganic particles as a component of the paint composition. In addition, the coating composition ensures easy handling of paint without paint storability, and polishing and repainting are possible when coating failure occurs.