Diet may refer to:

Food

  • Diet (nutrition), the sum of the food consumed by an organism or group
  • Dieting, the deliberate selection of food to control body weight or nutrient intake
  • Diet food, foods that aid in creating a diet for weight loss or gain
  • Healthy diet, the process of helping to maintain or improve overall health

Politics

  • Diet (assembly), a formal deliberative assembly

Current

  • National Diet, Japan's bicameral legislature, in its current form since 1947, composed of the House of Representatives and the House of Councillors
  • Landtag, a diet of states and provinces in Germany, Austria, South Tyrol in Italy, and the national parliament of Liechtenstein
  • Bundestag (Deutscher Bundestag), the lower house of Germany's Parliament, was established in West Germany in 1949, and all of Germany in 1990
  • Riksdag, the unicameral legislature of Sweden

Historical

  • Diet of Finland, the legislative assembly of the Grand Duchy of Finland from 1809 to 1906
  • Diet of Hungary, the legislative assembly of the Kingdom of Hungary from 15th century to 1946
  • Imperial Diet (Holy Roman Empire), the imperial assembly of the princes of the Holy Roman Empire until 1806
  • Federal Convention (German Confederation), or Confederate Diet (German: Bundesversammlung or Bundestag) was the only central institution of the German Confederation (1815–1848 and 1850–1866)
  • Reichstag
  • Reichstag (German Empire) (Reichstag), the Diet of the Empire, the legislative assembly of the German Empire, 1871–1917
  • Reichstag (Weimar Republic), (Reichstag), the Diet of the Weimar Republic, from 1919 to 1933
  • Reichstag (Nazi Germany), (Reichstag), the Diet of Nazi Germany, from 1933 to 1945, a purely ceremonial "parliament" in a totalitarian dictatorship without elections

Television, film, or music

  • "Diet", an episode of the Adult Swim animated television series, Aqua Teen Hunger Force
  • The Diet (cartoon), a Beetle Bailey animated short
  • "Diet", a 2020 single by Peakboy

Other uses

  • DIET, an open-source middleware for high-performance computing

See also

  • List of diets
  • Dietsch (disambiguation), distinguishes the southern dialects in the Middle Dutch language