To provide a resin composition which is used for dispersing a pigment, has good pigment dispersibility and good color miscibility, and is useful for weak solvent coatings.

This resin composition for dispersing the pigment, characterized by comprising (B) a weak solvent, (C) a pigment, and (A) a polymer whose main chain comprises a substantial vinylic polymer and which has hydrolyzable group-bound silicon groups and at least one tertiary amine unit represented by general formula (I) in the molecule, and the coated article coated with the resin composition for dispersing the pigment.