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Leadership and Governance

Los Alamos National Laboratory’s Leadership

The Leadership Team is fully committed to enabling the Laboratory’s mission while supporting its people, further enhancing the culture, and meeting the goals outlined in the Lab Agenda.

Our leaders are committed to scientific and technological excellence, driving a culture of operational excellence, and enabling the high quality and integrity of the Laboratory’s national security missions.

Download the LANL Leadership Org Chart (PDF). 

Laboratory Director’s Office

Thomas Mason

Laboratory Director

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Frances Chadwick

LANL Staff Director

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J. Patrick Fitch

Deputy Laboratory Director for Science, Technology & Engineering (DDST&E)

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Charles W. Nakhleh

Deputy Laboratory Director for Weapons (DDW)

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Mark Davis

Deputy Laboratory Director for Operations (DDOPS)

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Associate Laboratory Directors for Science, Technology & Engineering (DDST&E)

Ellen K. Cerreta

Associate Laboratory Director, Physical Sciences (ALDPS)

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Mark B. Chadwick

Associate Laboratory Director, Simulation, Computing & Theory (ALDSCT)

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Srinivas Iyer

Associate Laboratory Director, Chemical, Earth & Life Sciences (ALDCELS)

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Nancy Jo Nicholas

Associate Laboratory Director, Global Security (ALDGS)

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Associate Laboratory Directors for Weapons (DDW)

Mark Anthony

Associate Laboratory Director, Plutonium Infrastructure

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David Dooley

Associate Laboratory Director, Weapons Production (ALDWP)

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John A. Hill

Associate Laboratory Director, Weapons Engineering (ALDW)

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John Scott (Interim)

Associate Laboratory Director, Weapons Physics (ALDX)

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Associate Laboratory Directors for Operations (DDOPS)

Scott Aeilts

Associate Laboratory Director, Business Management

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Unica K. T. Viramontes

Associate Laboratory Director, Defense Protection (ALDDP)

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Steven Coleman

Associate Laboratory Director, Environment, Safety, Health & Quality (ALDESHQ)

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Bret Simpkins

Associate Laboratory Director, Facilities & Operations (ALDFO)

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Jeff Sims

Associate Laboratory Director, Infrastructure & Capital Projects (ALDICP)

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Los Alamos National Laboratory

P.O. Box 1663

Los Alamos, NM 87545

(505) 667-5061

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