A molded article selected from the group consisting of (1) a sheet or a film, (2) a thermoformed article, (3) a stretched film, wherein the molded article is made of a polyester resin composition containing a polyester resin and a polyester-based plasticizer represented by the following formula (I): R 1 O-CO-R 2 -CO-[(OR 3 ) m O-CO-R 2 -CO-] n OR 1 (I), wherein R 1 is an alkyl group having from 1 to 4 carbon atoms, R 2 is an alkylene group having from 2 to 4 carbon atoms, R 3 is an alkylene group having from 2 to 6 carbon atoms, m is the number of from 1 to 6, and n is the number of from 1 to 12, with proviso that all the R 2 's may be identical or different, and that all the R 3 's may be identical or different. The molded article of the present invention can be, for example, suitably used, such as a sheet or film for use in various industrial applications in foods, agriculture, and industries, a thermoformed article for use in various applications such as food containers, wrapping materials for daily sundries and household electric appliances, and industrial trays of industrial parts, and a stretched film for use in various applications such as wrapping materials for food wrappings, daily sundries, and household electric appliances, and various industrial films, respectively.