Enlightenment or enlighten may refer to:
- Age of Enlightenment, period in Western intellectual history from the late 17th to late 18th century, centered in France but also encompassing (alphabetically by country or culture):
- England: Midlands Enlightenment, period in 18th-century England
- Greece: Modern Greek Enlightenment, an 18th-century national revival and educational movement in Greece
- Italy: Italian Enlightenment, period in 18th-century Italy
- Jewish: Haskalah, Jewish Enlightenment, movement among European Jews in the late 18th century
- Poland: Enlightenment in Poland, ideas of the Age of Enlightenment in Poland
- Russia: Russian Enlightenment, 18th-century period of active government encouragement of proliferation of arts and sciences in Russia
- Scotland: Scottish Enlightenment, period in 18th-century Scotland
- Spain: Enlightenment in Spain, came to Spain with a new dynasty, the Bourbons, subsequent reform and 'enlightened despotism'
- USA: American Enlightenment, intellectual culture of the British North American colonies and the early United States
- Arab Enlightenment or Nahda, late 19th to early 20th century.