<p>A polyolefin resin composition comprising 100 parts by weight of a polyolefin (A) and 0.1-100 parts by weight of a modified polyolefin (B) produced by polymerizing 1-500 parts by weight of a vinyl monomer (b) in the presence of 100 parts by weight of a nonpolar polyolefin (a), wherein the refractive index of the polyolefin (A) is substantially equal to that of the polyolefin (B). The composition is excellent in processability and can provide moldings excellent in transparency, impact resistance, rigidity and surface properties.</p>