Abstract: Provided is a resin composition for coating, including: 35-65 wt % of a high-molecular weight polypropylene resin (A) having a weight average molecular weight of 100,000-300,000 and an isotactic chain molar fraction, L, of 0.30-0.70; 30-60 wt % of a low-molecular weight polypropylene resin (B) having a weight average molecular weight of 10,000-50,000 and an isotactic chain molar fraction, L, of 0.30-0.70; and 0.1-5.0 wt % of a highly crystalline, low-molecular weight polypropylene resin (C) having a weight average molecular weight of 5,000-50,000 and an isotactic chain molar fraction, L, of 0.70-0.75. The polypropylene resin composition for coating is amenable to spray coating while avoiding a need for a complicated process such as discharge treatment, flame treatment or acid treatment of a polypropylene substrate, in the absence of chlorine, and is effective for forming a coating film having excellent scratch resistance and adhesive property and showing no tagging property.