Abstract: A styrenic resin composition includes:(1) 5 to 90 weight percent of a graft copolymer (C) prepared by bulk or solution polymerization of 100 parts by weight of monomers including 80 to 45 parts by weight of vinyl aromatic monomers, 15 to 50 parts by weight of vinyl cyanide monomers, and 0 to 40 parts by weight of copolymerizable monomers, in the presence of 0.1 to 10 parts by weight of a rubber graft copolymer (A) having a weight average particle size of 0.05 to 0.8 .mu.m and 0.1 to 10 parts by weight of an acrylic copolymer (B);(2) 95 to 10 weight percent of a graft copolymer (D) prepared by emulsion polymerization of 50 to 15 parts by weight of a mixture of 45 to 80 parts by weight of vinyl aromatic monomers, 15 to 50 parts by weight of vinyl cyanide monomers and, optionally, 0 to 40 parts by weight of copolymerizable monomers, in the presence of 50 to 85 parts by weight of a butadiene rubber having a weight average particle size of 0.05 to 0.8 .mu.