Diary of a Madman

• A Madman's Diary
• Diary of a Madman (1990 film)
• Diary of a Madman (Gravediggaz song)
• Diary of a Madman (album)
• Diary of a Madman (film)
• Diary of a Madman (short story)
• Jun'ichirō Tanizaki
• Scarface (rapper)
• The Diary of a Madman (opera)
• The Horla
• Walter Lassally