The term Ottoman (from Arabic Uthmani, deriving from the name of the Turkic ruler Osman I) may refer to:
- the Ottoman Empire, a state in existence from 1299 to 1922;
- Ottoman Turks, the Turkic ethnic group which originally comprised the Ottoman Empire;
- the Ottoman Dynasty, the governing family of the Ottoman Empire;
- the Ottoman Turkish language;
- Ottoman military bands, or Mehter takımı;
- Ottoman (furniture), a padded stool or footstool; or
- Pax Ottomana, a phrase used to describe a long time of peace in the Ottoman Empire.
- Otto Mann, a character on The Simpsons
