Exhibit 21 			 Ohio Casualty Corporation 			 Subsidiaries of Registrant 			 as of December 31, 2000 Name of Subsidiary State of Incorporation The Ohio Casualty Insurance Company Ohio West American Insurance Company Indiana Ohio Casualty of New Jersey, Inc. Ohio Ohio Security Insurance Company Ohio American Fire and Casualty Company Ohio Avomark Insurance Company Indiana Ocasco Budget, Inc. Ohio Hamilton Intermediaries, LLC Ohio Avomark Insurance Agency, LLC Ohio Ohio Life Brokerage Services, Inc. Kentucky Hamilton Graphics, Inc. Ohio 				 115