Exhibit 21 KMART CORPORATION AND SUBSIDIARY COMPANIES SIGNIFICANT SUBSIDIARIES The Registrant has no parent but had the following significant subsidiaries as of January 31, 1996: Name Jurisdiction of Incorporation Percentage of Voting Securities Held - ------------------------------- ----------------------------- ------------------------------------ Kmart Canada Limited Dominion of Canada 100% Kmart CR a.s. Czech Republic 100% Kmart SR a.s. Slovak Republic 100% Builders Square, Inc. Delaware 100% Kmart Mexico S.A. de C.V. Mexico 50% Kmart Metro (Private) Limited Singapore 50.1% 1