Abstract: A resin composition for coating suitable as, for example, a surface coating material capable of improving the coatability, etc., of olefin resin films, etc., which contains an epoxidized block copolymer (A) and an organic compound (B) carrying a functional group reacting with an epoxy group and having a number-average molecular weight of from 150 to 150,000, wherein the weight ratio (A)/(A+B) ranges from 1/100 to 99/100. Another resin composition for coating which contains an epoxidized block copolymer (A), an organic compound (B) carrying a functional group reacting with an epoxy group and having a number-average molecular weight of from 150 to 150,000, and an epoxy ring opening promoter (C), wherein the weight ratio (A)/(A+B) ranges from 1/100 to 99/100 and the content of the above component (C) ranges from 0.1 to 10 parts by weight per 100 parts by weight of (A+B).