Unhappy

Unhappy may refer to:
 * an adjective denoting a person in a state of depression
 * Unhappy consciousness, a philosophical concept popularized by Georg Wilhelm Friedrich Hegel
 * Unhappy numbers, a mathematical concept
 * Unhappy triad, a knee injury
 * Unhappy Mac, a legacy Macintosh startup screen

People

 * "Unhappy Countess", an alternative name for Mary Bowes, Countess of Strathmore and Kinghorne

Media

 * "Unhappy Girl", a song by The Doors on their 1967 album Strange Days
 * "Unhappy Birthday", a song by Dead or Alive on their 1990 album Fan the Flame (Part 1)
 * "Unhappy", a song by Outkast on their 2003 album Speakerboxxx/The Love Below
 * "Unhappy", a song by Lukas Graham on their 2018 album 3 (The Purple Album)
 * Unhappy China, a 2009 book by Song Qiang, Huang Jisu, Song Xiaojun, Wang Xiaodong and Liu Yang
 * Unhappy, a manga by Cotoji adapted into an anime series