Marcus Kann (1820 in Vienna – February 3, 1886) was an Austrian chess player.
He and Horatio Caro jointly analysed and published their analysis of the chess opening later to-be-called Caro-Kann Defence (1.e4 c6) in the German Brüderschaft magazine in 1886.
During the 4th German Chess Congress in Hamburg in May 1885, Kann defeated German-British champion Jacques Mieses with the Caro-Kann Defence (ECO B12) in 24 moves.
The magazine Deutsche Schachzeitung (1886, p. 128) published a short obituary after his death.
This biographical article relating to an Austrian chess figure is a stub.