EXHIBIT 21 ROCK-TENN COMPANY SUBSIDIARIES OF ROCK-TENN COMPANY NAME JURISDICTION OF INCORPORATION ---- ----------------------------- 1. Rock-Tenn Company, Mill Division, Inc. Tennessee 2. Dominion Paperboard Products, Ltd. Quebec, Canada 3. Rock-Tenn Company of Texas Georgia 4. Rock-Tenn Converting Company Georgia 5. Rock-Tenn Company of Arkansas Georgia 6. Ling Industries, Inc. Quebec, Canada 7. Rock-Tenn Company of California, Inc. Delaware 8. Rock-Tenn Company of Illinois, Inc. Illinois 9. Concord Industries, Inc. Illinois 10. Waldorf Corporation Delaware 11. Wabash Corporation Delaware 12. Wabash Development, Inc. Delaware 13. Waldorf Realty, Inc. Delaware 14. Best Recycling, Inc. Iowa 15. RTS Packaging, LLC Delaware 16. Rock-Tenn Recycling Company Quebec, Canada 17. Rock-Tenn Partition Company Georgia 18. RTS Empaques S. de R.L. de C.V. Mexico 19. Waldorf Corporation of Minnesota Delaware 20. RTS Embalajes de Chile Limitada Santiago, Chile 21. Rock-Tenn Financial, Inc. North Carolina 22. Rock-Tenn Foreign Sales Corporation Barbados 23. Rock-Tenn Real Estate, LLC Georgia