EX-21 JANUARY 27, 1998 HARRAH'S ENTERTAINMENT, INC. SUBSIDIARIES JURISDICTION PERCENTAGE DATE OF NAME OF INCORPORATION OF OWNERSHIP INCORPORATION - ----------------------------------------------------------------- ----------------- ------------- ------------- Aster Insurance Ltd.............................................. Bermuda 100% 02/06/90 Harrah's Operating Company, Inc.................................. Delaware 100% 08/08/83 HEI Acquisition Corp........................................... Nevada 100% 12/16/97 HPB Corporation................................................ Kansas 100% 11/13/97 Harrah South Shore Corporation................................. California 100% 10/02/59 Harrah's--Holiday Inns of New Jersey, Inc...................... New Jersey 100% 09/19/79 Harrah's Alabama Corporation................................... Nevada 100% 09/09/93 Harrah's Alberta Investment Corporation........................ Alberta 100% 04/05/95 Harrah's Arizona Corporation................................... Nevada 100% 01/26/93 Harrah's Asia Development Company.............................. Nevada 100% 09/20/96 Harrah's Asia Investment Company............................... Nevada 100% 09/20/96 Harrah's Asia Management Company............................... Nevada 100% 09/20/96 Harrah's Atlantic City, Inc.................................... New Jersey 100% 02/13/79 Harrah's Aviation, Inc......................................... Tennessee 100% 03/11/63 Harrah's California Corporation................................ Nevada 100% 02/02/94 Harrah's Colorado Investment Corporation....................... Nevada 100% 06/23/93 Harrah's Colorado Management Company........................... Nevada 100% 06/23/93 Harrah's Colorado Standby Corporation.......................... Nevada 100% 11/10/93 Harrah's Crescent City Investment Company...................... Nevada 100% 03/28/97 Harrah's Huntington Corporation................................ W. Virginia 100% 03/03/95 Harrah's Illinois Corporation.................................. Nevada 100% 12/18/91 Van Buren Leasing Corporation(1)............................. Nevada 100% 08/30/96 Harrah's Indiana Casino Corporation............................ Nevada 100% 09/09/93 Harrah's Indiana Management Corporation........................ Nevada 100% 09/09/93 Harrah's Interactive Entertainment Company..................... Nevada 100% 09/21/94 Harrah's Interactive Investment Company........................ Nevada 100% 09/21/94 Harrah's Kansas Casino Corporation............................. Nevada 100% 11/12/93 Harrah's Las Vegas, Inc........................................ Nevada 100% 03/21/68 Harrah's Laughlin, Inc......................................... Nevada 100% 07/10/87 Harrah's Management Company.................................... Nevada 100% 04/07/83 Harrah's Marketing Services Corporation........................ Nevada 100% 08/21/97 Harrah's Maryland Heights Corporation.......................... Nevada 100% 07/30/93 Harrah's Maryland Heights LLC(2)............................... Delaware 99% 10/16/95 Harrah's Maryland Heights Operating Company.................... Nevada 100% 06/20/95 Harrah's de Mexico, S.A. de C.V.(3)............................ Mexico 50% 05/29/95 Harrah's Michigan Corporation.................................. Nevada 100% 06/15/93 Harrah's Minnesota Corporation................................. Nevada 100% 10/20/92 Harrah's NC Casino Company, LLC(4)............................. North Carolina 99% 04/21/95 Harrah's New Jersey, Inc....................................... New Jersey 100% 09/13/78 Harrah's New Orleans Investment Company........................ Nevada 100% 05/21/93 Harrah's New Orleans Management Company........................ Nevada 100% 05/21/93 Harrah's New Zealand Inc....................................... Nevada 100% 02/18/92 Harrah's-North Kansas City Corporation......................... Nevada 100% 02/23/93 Harrah's Ontario, Inc.......................................... Canada 100% 06/23/93 Harrah's Pennsylvania Development Co........................... Nevada 100% 05/18/94 Harrah's Pittsburgh Management Company......................... Nevada 100% 06/08/94 HARRAH'S ENTERTAINMENT, INC. JURISDICTION PERCENTAGE DATE OF NAME OF INCORPORATION OF OWNERSHIP INCORPORATION - ----------------------------------------------------------------- ----------------- ------------- ------------- Harrah's Red River Corporation................................. Nevada 100% 08/05/96 Harrah's Reno Holding Company, Inc............................. Nevada 100% 02/23/88 Harrah's Shreveport Investment Company, Inc.................... Nevada 100% 04/23/92 Harrah's Shreveport Management Company, Inc.................... Nevada 100% 04/23/92 Harrah's Skagit Valley Agency Corporation...................... Nevada 100% 11/08/95 Harrah's Southeast Washington Casino Corporation............... Nevada 100% 11/21/95 Harrah's Southwest Michigan Casino Corporation................. Nevada 100% 04/06/95 Harrah's Tunica Corporation.................................... Nevada 100% 08/10/92 Harrah's Vicksburg Corporation................................. Nevada 100% 07/13/92 Harrah's Washington Corporation................................ Nevada 100% 02/03/94 Harrah's West Virginia Corporation............................. W. Virginia 100% 03/03/95 Harrah's Wheeling Corporation.................................. Nevada 100% 04/29/94 - ------------------------ (1) 100% owned by Des Plaines Development Limited Partnership of which Harrah's Illinois Corporation is 80% partner (2) 99% Harrah's Operating Company, Inc., 1% Harrah Maryland Heights Operating Company (3) 50% Harrah's Operating Company, Inc., 50% Harrah's Mexico Holding Company (4) 99% Harrah's Operating Company, Inc., 1% Harrah's Management Company