A coating composition, suitable for coating the surface of an organic resin substrate, said composition comprising the following components: silicone resin obtainable by (co)hydrolysis and condensation of at least one selected from alkoxysilanes of the following formulae, and and condensates of partial hydrolysates of such alkoxysilane, provided that the ratio /[ +], in terms of mol% of silicon, is from 50/50 to 0/100: (R 1) m (R 2) n Si(OR 3) 4-m-n wherein R 1 and R 2 are independently a hydrogen atom or an unsubstituted or substituted monovalent hydrocarbon group, in which the substituent groups may be connected each other, R 3 is an alkyl group having 1 to 3 carbon atoms, and m and n are independently 0 or 1, with m+n being 0, 1, or 2, (R 4 O) 3-p (R 6) p Si-R 8 -Si(R 7) q (OR 5) 3-q wherein R 4 and R 5 are independently an alkyl group having 1 to 3 carbon atoms, R 6 and R 7 are independently a hydrogen atom or an unsubstituted or substituted monovalent hydrocarbon group, R 8 is an oxygen atom, phenylene group, or an unsubstituted or substituted alkylene group having 2 to 10 carbon atoms, and p and q are independently 0 or 1, X-[(R 15)Si(R 16) y (OR 17) 3-y] z wherein X is a 1,3,5-trimethylcyclotrisiloxane residue, 1,3,5,7-tetramethylcyclotetrasiloxane residue, or isocyanurate residue, R 15 is an alkylene group having 1 to 3 carbon atoms, R 16 is a hydrogen atom or an unsubstituted or substituted monovalent hydrocarbon group, R 17 is an alkyl group having 1 to 3 carbon atoms, y is 0 or 1, and z is 3 or 4; a vinyl copolymer having in its side chain an organic ultraviolet-absorbing group and a reactive group selected from an alkoxysilyl group, hydroxyl group, epoxy group, carboxylic acid group, and amino group; a curing catalyst; and a solvent; wherein the silicone resin as component and the vinyl copolymer as component are present in such amounts in terms of solids that the ratio of / is from 10/90 to 50/50 by weight. silicone resin obtainable by (co)hydrolysis and condensation of at least one selected from alkoxysilanes of the following formulae, and and condensates of partial hydrolysates of such alkoxysilane, provided that the ratio /[ +], in terms of mol% of silicon, is from 50/50 to 0/100: (R 1) m (R 2) n Si(OR 3) 4-m-n wherein R 1 and R 2 are independently a hydrogen atom or an unsubstituted or substituted monovalent hydrocarbon group, in which the substituent groups may be connected each other, R 3 is an alkyl group having 1 to 3 carbon atoms, and m and n are independently 0 or 1, with m+n being 0, 1, or 2, (R 4 O) 3-p (R 6) p Si-R 8 -Si(R 7) q (OR 5) 3-q wherein R 4 and R 5 are independently an alkyl group having 1 to 3 carbon atoms, R 6 and R 7 are independently a hydrogen atom or an unsubstituted or substituted monovalent hydrocarbon group, R 8 is an oxygen atom, phenylene group, or an unsubstituted or substituted alkylene group having 2 to 10 carbon atoms, and p and q are independently 0 or 1, X-[(R 15)Si(R 16) y (OR 17) 3-y] z wherein X is a 1,3,5-trimethylcyclotrisiloxane residue, 1,3,5,7-tetramethylcyclotetrasiloxane residue, or isocyanurate residue, R 15 is an alkylene group having 1 to 3 carbon atoms, R 16 is a hydrogen atom or an unsubstituted or substituted monovalent hydrocarbon group, R 17 is an alkyl group having 1 to 3 carbon atoms, y is 0 or 1, and z is 3 or 4; a vinyl copolymer having in its side chain an organic ultraviolet-absorbing group and a reactive group selected from an alkoxysilyl group, hydroxyl group, epoxy group, carboxylic acid group, and amino group; a curing catalyst; and a solvent;