Bernardus Andries "Dries" Riphagen (7 September 1909 – 13 May 1973) was a Dutch gangster and Nazi collaborator who is best known in the Netherlands for collaborating with the Nazi Germany's Sicherheitsdienst (SD) to locate as many Dutch Jews as possible and have them delivered to Nazi concentration camps during the Nazi occupation of the Netherlands.
Riphagen would gain the trust of Jews who sought his help by promising to safeguard their belongings, primarily jewelry, until the conclusion of the Second World War, only to defraud them of their belongings and notify the SD of their location.
After the end of war in Europe, he faked his death and went into hiding.
He deposited the Jewish belongings and money gained from them in an undetermined bank in neutral Switzerland and fled to Argentina, as have many Nazi officers.
He returned to Europe secretly at some point between 1950 and 1970 to withdraw the ill-gotten jewelry.
Dutch authorities issued an arrest warrant and bounty on Riphagen in 1988, but it was later discovered that he had already died at a Swiss private clinic in Montreux in 1973.