The Food and Drug Administration (FDA or USFDA) is an agency of the United States Department of Health and Human Services and is responsible for regulating and supervising the safety of foods, dietary supplements, drugs, vaccines, biological medical products, blood products, medical devices, radiation-emitting devices, veterinary products, and cosmetics. The FDA also enforces section 361 of the Public Health Service Act and the associated regulations, including sanitation requirements on interstate travel as well as specific rules for control of disease on products ranging from pet turtles to semen donations for assisted reproductive medicine techniques.

The FDA is an agency within the United States Department of Health and Human Services responsible for protecting and promoting the nation's public health. The FDA is headquartered in Rockville, MD with 223 field offices supported by 13 laboratories located throughout the United States, the U.S. Virgin Islands, and Puerto Rico. In recent years the agency began undertaking a large-scale effort to consolidate its DC-metro area operations from its main headquarters in Rockville and several fragmented office buildings in the vicinity to the former site of the Naval Ordnance Laboratory in the White Oak area of Silver Spring, MD. When FDA arrived, the site was renamed from the White Oak Naval Surface Warfare Center to the White Oak Federal Research Center. The first building, a Life Sciences Laboratory, was dedicated and opened with 104 employees on the campus in December 2003. The project is slated to be completed by 2013.

The agency is organized into the following major subdivisions, each focused on a major area of regulatory responsibility: