Skip to main content
U.S. flag

An official website of the United States government

Dot gov

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

SSL

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

National Nuclear Security Administration

The National Nuclear Security Administration works to ensure that the nation's stockpile of nuclear weapons is safe and secure. It also works to ensure the safety of naval nuclear reactors, is the first responder in case of nuclear emergency, and works on worldwide nuclear nonproliferation issues.

Agency Details

Website:

National Nuclear Security Administration

Contact:

Contact the National Nuclear Security Administration

Main Address:

1000 Independence Ave., SW
Washington, DC 20585

Phone Number:

1-202-586-5000 (Energy Switchboard)

Toll Free:

1-800-342-5363

Forms:

Nuclear Materials Management and Safeguards System Forms

Government branch:

Executive Department Sub-Office/Agency/Bureau

Parent Agency

Share This Page:
Top