1804

1804 (MDCCCIV) was a leap year starting on Sunday in the Gregorian calendar and a leap year starting on Friday in the Julian calendar.

 Births 
 July 4 – Nathaniel Hawthorne, American writer (The Scarlet Letter, The House of the Seven Gables, etc.)
 November 23 - Franklin Pierce, fourteenth President of the United States (d. 1869)

 Deaths 
 February 12 – Immanuel Kant
 July 12 – Alexander Hamilton, 49 (b. 1755)