An open secret is a concept, fact, or idea that is widely known yet officially undeclared.

Open Secret(s) may also refer to: Open Secrets (South Africa), a South African social justice nonprofit OpenSecrets, an American nonprofit Open Secret, a 1948 film Open Secrets (short story collection), a 1994 short story collection by Alice Munro An Open Secret, a 2014 documentary film "Open Secrets", a song by Rush from the album Hold Your Fire Open Secret, a 1965 book by Wei Wu Wei Open Secret: Gay Hollywood, 1928-1998, a 1998 book by David Ehrenstein Open Secrets: A Memoir of Faith and Discovery, by Richard Lischer Open Secret: The Autobiography of the Former Director-General of MI5, the autobiography of Stella Rimington Open Secrets: India's Intelligence Unveiled, a memoir by an Indian intelligence operative Open Secrets (album), a 1988 album by Peter Kowald