Events in 1820

11 notable events from 1820.

• Black War
  1820s–1832 · Australia
• Liberal Revolution of 1820
  Aug 24, 1820 · Portugal
• Cato Street Conspiracy
  Feb 22, 1820–Feb 23, 1820 · United Kingdom
• Tongue River Massacre (1820)
  1820 · —
• Revolution of the Suns and Rays
  Jan 1, 1820–Jan 1, 1823 · Cuba
• Conspiracy of La Profesa
  Jan 1, 1820 · Mexico
• Callao affair
  Nov 5, 1820–Nov 6, 1820 · Peru
• Cambodian rebellion (1820)
  1820 · Cambodia
• Yorkshire West Riding Revolt
  1820 · —
• Netherlands flood of 1820
  Jan 23, 1820–Jan 26, 1820 · Netherlands
• Conspiracy of 1820
  1820 · Paraguay