1811

1811 (MDCCCXI) was a common year starting on Tuesday in the Gregorian calendar and a common year starting on Sunday in the Julian calendar.

 Births 
March 4 - Sir John Lawrence, British Indian administrator
October 22 – Franz Liszt, Hungarian composer

 Events 
May 14 – Paraguay declares independence from Spain.
Bolivia declares indepencence.
Uruguay fights against Spain.