ONE National Gay & Lesbian Archives

ONE National Gay & Lesbian Archives is an American Archives and Museum.

The ONE National Gay & Lesbian Archives contains the largest collection of LGBT documents worldwide. Over 30,000 documents are kept in the library and over 2,000,000 items related to LGBT issues are represented in the collection. The museum is located in Los Angeles, near the campus of the University of Southern California. A small gallery with reference to the history of homosexuality is connected to the museum and is located in West Hollywood. The archive can be visited during regular business hours.

The archive is in its origins to ONE, Inc., one of the first LGBT organizations in the United States back. The organization was founded in 1952 by Dorr Legg and Don Slater which issued together the LGBT magazine published periodically ONE Magazine. In the 1990 the archive of this organization was merged with the archive of the author Jim Kepner.