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About APL

Who We Are

The Applied Physics Laboratory (APL) is a not-for-profit center for engineering and research and development. Located north of Washington, DC, APL is a division of one of the world's premier research universities, The Johns Hopkins University (JHU). The Laboratory has been a major asset to the nation since it was organized to develop a critical World War II technology in 1942.

What We Do

APL is dedicated to solving critical problems of national security and advancing the nation’s vision in research and space science through our work on more than 600 programs serving the Navy, Air Force, Army, NASA, and numerous other government agencies. As a University Affiliated Research Center, our scientists, engineers, and analysts serve as trusted advisors and technical experts to the government, ensuring the reliability of complex technologies that safeguard our nation’s security and advance the frontiers of space. We also maintain independent research and development programs that pioneer and explore emerging technologies and concepts to address future national security and scientific challenges.

How We're Organized

Mission Areas

Departments

Connection to JHU

APL at a Glance

Dr. Ralph Semmel
APL Director
Dr. Ralph Semmel

Staff: 5,000 (68% engineers and scientists)

Size: 399 acres with more than 20 major buildings, plus a nearby satellite campus

Location: Between Baltimore and Washington, DC, near I-95

Business: Diversified portfolio of more than 600 programs, primarily Department of Defense, Department of Homeland Security, NASA, and NSA sponsors, as well as R&D

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