Secure Handling of Ammonium Nitrate Act of 2005

Secure Handling of Ammonium Nitrate Act of 2005 - Authorizes the Secretary of Homeland Security to regulate the handling and purchase of ammonium nitrate to prevent its misappropriation or use in violation of law.

Authorizes the Secretary to promulgate regulations that require: (1) handlers to register facilities, to sell or distribute ammonium nitrate only to handlers and purchasers registered under this Act, and to maintain records of sale or distribution that include the name, address, telephone number, and registration number of the immediate subsequent purchaser of ammonium nitrate; and (2) purchasers to be registered.

Makes it unlawful for any person to: (1) fail to perform any duty required by this Act, including regulations promulgated under this Act; (2) violate the terms of registration under this Act; (3) fail to keep any record, make any report, or allow any inspection required by this Act; or (4) to violate any sale or distribution order issued under this Act. Provides penalties for violations.