Leo J. Ryan Federal Building, Federal archive facility in San Bruno, United States

The Leo J. Ryan Federal Building is a federal archive and office facility in San Bruno, California, opened in 1973 and run by the General Services Administration. It holds over 200 million records from 110 federal agencies plus 10,000 records from Pacific Sierra region federal courts. The building is isolated behind a cyclone fence, fireproof and climate-controlled, with records rooms kept at 70 °F and 50% humidity.

The building was established in 1973 and received its name in 1984 to honor a deceased congressman. The naming recognized his service and importance to the region.

The building holds records about Asian-Pacific immigration history and Native American heritage that visitors can explore. These collections tell personal stories of families who came to the region and settled there.

The building sits behind a cyclone fence on Commodore Drive, kept apart from other government offices, so allow time to find the entrance. Research visits are by prior arrangement; the reading rooms hold 200 million records from 110 federal agencies plus 10,000 Pacific Sierra court records. Staff make over 100,000 photocopies a year, so request copies early.

The building uses climate and humidity control to protect the delicate documents over extended periods. These special conditions allow old papers and records to survive for generations.