Heinrich Friedrich Wilhelm Beythien (13 February 1873, in Quakenbrück – 17 March 1952, in Berlin-Wilmersdorf) was a German politician and functionary of the DVP and Nazi Party (NSDAP).
Beythien took over 1917 also the office of President of the Reich Federation of Associations of the German Retail Grocery Trade.
His brother Adolf Beythien was a chemist and Director of the Chemical Investigation Office of the city of Dresden.
Beythien joined after the November Revolution to the DVP and was elected to the Central Committee of the Party.
In the general election in June 1920 he was in the German Reichstag voted, where he remained until July 1932nd In Parliament he represented the constituency Osthannover.