1866 in Russia

Incumbents

• Monarch – Alexander II

Events

• Daugavpils–Indra Railway
• Delo (magazine)
• Ekostrovskaya Volost
• Kalinin Machine-Building Plant
• Moscow Criminal Investigations Department
• South Eastern Railway (Russia)
• Swedish Theatre
• Alexander III marries Maria Sophie Feodorovna of Denmark

Births

• - Dmitri Parsky, general
• - Wassily Kandinsky, artist.

Deaths

• - Mikhail Petrashevsky, Russian revolutionary and Utopian theorist.
• Maria Ikonina, ballerina.