Feliks Yakovlevich Kon (18 May 1864 – 30 July 1941) was a Polish communist activist, politician, ethnographer, publicist and journalist.

[1] He was a member of the anti-Piłsudski faction of the Polish Socialist Party and gravitated towards the anti-independence & pro-communism point of view.

[5] As the Bolsheviks began to prepare for the Polish-Soviet War, they summoned an increasing number of Polish communists, active elsewhere in Soviet service, to Moscow in order to form a cadre of party and state officials to move into ethnographic Poland with the Red Army.

[6] He was put on the Provisional Polish Revolutionary Committee (formed in Białystok on 30 July 1920 - dissolved 20 August 1920)[7] during the Polish-Soviet War.

Its purpose was to agitate and it printed all the appeals issued by the Communist puppet government, as well as distinctly skewed news from the war.

However, letters written by Vladimir Lenin referred to Kon, whom he "couldn't stand", as simply an "old fool" (staryi duren).