An object of the present invention is to provide a coating composition that has excellent curability at low temperatures and in a short period of time, and that also has satisfactory pot life (usable life) and makes it possible to obtain a cured coating film with an excellent finished appearance. The present invention provides a coating composition comprising a secondary hydroxy-containing acrylic resin (A), which is a copolymer of monomer components comprising 20 to 50% by mass of secondary hydroxy-containing polymerizable unsaturated monomer (a) and 50 to 80% by mass of at least one other polymerizable unsaturated monomer (b); a polyisocyanate compound (B); and an organometallic catalyst (C) containing a metallic compound (C1) in which the metal is a member selected from the group consisting of zinc, tin, zirconium, bismuth, lead, cobalt, manganese, titanium, aluminum and molybdenum, and an amidine compound (C2).