Main Page | See live article | Alphabetical index The National Institute of Justice (NIJ) is the research agency of the United States Department of Justice. NIJ sponsors criminological research and improvements in criminal justice and police technology. NIJ has developed a standard for police bullet-proof vests. It is notable among governmental research organizations because it is headed by a political appointee rather than by a scientist or a member of the civil service. This article is a stub. You can help Wikipedia by fixing it. This article is from Wikipedia. All text is available under the terms of the GNU Free Documentation License.