Brown (born November 15, 1969) is an American activist, and politician who served as secretary of state of Rhode Island from 2003 to 2007.

Alongside Bruce G. Blair, Brown co-founded Global Zero, a non-profit international initiative for the phased, verified elimination of all nuclear weapons worldwide.

At age 32, in his first campaign for public office, Brown defeated the incumbent Secretary of State in the Democratic primary, and went on to win the general election with 68.7% of the vote.

Brown is Co-Founder, with Bruce G. Blair, of Global Zero, a non-profit international initiative for the elimination of all nuclear weapons worldwide.

[2] Since its launch in Paris in December 2008,[3] Global Zero has grown to 300 leaders, including current and former heads of state, national security officials and military commanders, and 400,000 citizens worldwide; developed a practical step-by-step plan to eliminate nuclear weapons; launched an international student campaign with 75 campus chapters in eight countries; and produced an acclaimed documentary film, Countdown to Zero, in partnership with Lawrence Bender and Participant Media.