Abraham Rajchmann (born 24 September 1902 in Dziurków, Poland) was a Jewish Polish career criminal and revolutionary militant, expert forger and engraver who worked for Soviet intelligence from 1934. Through his contact with Comintern official Léon Grossvogel, he was recruited into a Soviet espionage group initially in Belgium that was being run by Leopold Trepper, that would later be called the Red Orchestra ("Rote Kapelle") by the Abwehr, during the Nazi period. Rajchmann used a number of aliases to disguise his identity, including Adam Blanssi, Arthur Roussel, Katenmann, Fabrikant and Max.