EXHIBIT (21) LUFKIN INDUSTRIES, INC. AND SUBSIDIARIES SUBSIDIARIES OF THE REGISTRANT Name Under Which such Subsidiary Name of Subsidiary Jurisdiction of Incorporation Does Business - ---------------------------------------------------------------------------------------------------------- Lufkin Industries Canada, Ltd. Province of Alberta, Canada Same P. T. Lufkin Indonesia Republic of Indonesia Same Lufkin Industries FSC, Corp Barbados Same Lufkin Japan, L. L. C. Japan Same Lufkin France, EURL France Same Lufkin Oilfield Services Egypt Egypt Same