A diary is a form of personal journal.

Diary may also refer to:

Diary (stationery), a small book with a space for each day of the year with room for notes Project diary, or log

Arts, entertainment, and media Films Diary (1975 film), a West German film directed by Rudolf Thome Diary (1983 film), an Israeli-British film Diary (2006 film), a Cantonese-language thriller film directed by Oxide Pang The Diary (1974 film), a Yugoslavian cartoon Diary (2009 film), Telugu language psychological thriller film

Albums Diary (Thelma Aoyama album), 2008 Diary (Sunny Day Real Estate album), 1994 Diary (Shiori Takei album), 2007 Diary (Ralph Towner album), 1973 The Diary (J Dilla album), 2016 The Diary (Scarface album), 1994 The Diary (The Gentle Storm album), 2015 The Diary (You Think You Know), a 2003 unreleased album by Charli Baltimore

Songs "Diary" (Charli Baltimore song) "Diary" (Bread song), 1972 "Diary" (Tino Coury song), 2010 "Diary" (Alicia Keys song), 2003 "Diary", a song by Aya Matsuura from the album T.W.O "Diary", a song by Gugudan from Act.1 The Little Mermaid "Diary", a song by Wale from the album Attention Deficit "The Diary" (song), a 1958 song by Neil Sedaka "The Diary", a song by Funeral for a Friend from the album Tales Don't Tell Themselves "The Diary", a song by Hollywood Undead from the album Swan Songs

Television Diary (American TV series), a series on MTV, showing the daily life of an artist Diary (Maldivian TV series), a 2010 romantic drama television mini-series Diary, a television ident for BBC Two, see BBC Two '1991–2001' idents "The Diary" (Adventure Time), a 2015 episode of the animated series Adventure Time "The Diary", a 2026 episode of the anime Mushoku Tensei

Other uses in arts, entertainment, and media Diary (novel), a novel by Chuck Palahniuk El Diario (disambiguation), the name of many Spanish-language newspapers

See also Logbook, a record of data relating to a ship or submarine