Resin composition and resin molded body

A resin composition comprising:

• cellulose acetate propionate;
• and
• an esterified starch;
• wherein
• the esterified starch is either
• an esterified starch esterified with acetyl group and stearyl group that is present in an amount of 40 parts by mass to 50 parts by mass with respect to 100 parts by mass of a total amount of the cellulose acetate propionate and the esterified starch, or
• an esterified starch esterified with propionyl group that is present in an amount of 40 parts by mass to 50 parts by mass with respect to 100 parts by mass of a total amount of the cellulose acetate propionate and the esterified starch;
• an acyl group substitution degree of the cellulose acetate propionate is from 1.0 to 3.0;
• a degree of esterification of the esterified starch is from 1.0 to 3.0;
• the cellulose acetate propionate has a weight average polymerization degree of from 100 to 1,200;
• the cellulose acetate propionate accounts for 50% by mass to 97% by mass of a total amount of resin components present in the resin composition;
• and
• the esterified starch accounts for 3% by mass to 50% by mass of the total amount of resin components present in the resin composition.