1840 in Russia

Events from the year 1840 in Russia

Incumbents

 * Monarch – Nicholas I

Events

 * Battle of the Valerik River
 * Convention of London (1840)
 * Battle of the Valerik River
 * Convention of London (1840)
 * Battle of the Valerik River
 * Convention of London (1840)
 * Battle of the Valerik River
 * Convention of London (1840)
 * Battle of the Valerik River
 * Convention of London (1840)

Births

 * April 9 – Praskovya Uvarova, archaeologist (d. 1924)
 * May 7 – Pyotr Ilyich Tchaikovsky, composer (d. 1893)