Spiegel is German, Yiddish, and Dutch for "mirror". More specifically, it may refer to:
- Der Spiegel (the mirror), a weekly German magazine
- Spiegel scandal, a 1962 German political scandal, named after the Der Spiegel magazine (see above)
- Spiegel (surname), a German surname
- Spiegel (catalog), an American catalog retailer
- Spiegel Grove, the Fremont, Ohio, home of U.S. President Rutherford B. Hayes, named after mirror-like pools of rainwater
- USS Spiegel Grove (LSD-32), a dock landing ship of the United States Navy
- Spiegeleisen, a pig iron containing a high level of manganese used in the manufacture of steel
- Spiegel, Inc., the former name of the Eddie Bauer Holdings
- Spiegel, the flagship of Michiel de Ruyter during the Second Anglo-Dutch War
- "Spiegel" (song), a hip hop song by German girl group Tic Tac Toe
- "Spiegel the Cat", a story-poem by David Martin based on a tale by Gottfried Keller
- Spiegel bei Koeniz, a village in the Swiss canton of Bern
- Spike Spiegel, the main character of the anime Cowboy Bebop
- Adriaan van den Spiegel, a Flemish anatomist.
- Spigelian hernia, a hernia of the abdominal wall, named after Van den Spiegel
- Gundam Spiegel, a mobile suit from the anime Mobile Fighter G Gundam, also known as Shadow Gundam in the English Language version.