NATO Peacekeeping in Iraq Act of 2003 - Expresses the sense of Congress that the North Atlantic Treaty Organization (NATO) should begin contributing peacekeeping and civil order personnel to promote security and stability in Iraq, and that the President should use diplomatic means to persuade NATO and NATO member nations to undertake a major peacekeeping and civil order mission in Iraq.
Authorizes appropriations to: (1) the Secretary of State to support NATO peacekeeping within Iraq; and (2) the President to make available defense articles, defense services, and military education and training to support peacekeeping activities.