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Applied Physics Laboratory

The Laboratory is a secure facility, operating under Department of Defense regulations for restricted entry. All visits to the Laboratory must be preapproved via written request and notification by responsible staff members. Staff members hosting visitors are responsible for ensuring that all security requirements are met.

Items: Visitors should be aware of APL rules for bringing restricted and controlled items, such as electronic devices, on site. Learn more by visiting the APL Visitor's Guide.

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Johns Hopkins University Applied Physics Laboratory
11100 Johns Hopkins Road
Laurel MD 20723-6099
Baltimore (443)-778-5000
Washington (240)-228-5000


The mission of The Johns Hopkins University is to educate its students and cultivate their capacity for life-long learning, to foster independent and original research, and to bring the benefits of discovery to the world.