Helmut Rauca (3 November 1908 – 29 October 1983) was a Holocaust perpetrator instrumental in the murder of more than 10,000 Jews from the Kaunas Ghetto, Lithuania, during World War II.

At the age of seventy-three, he was charged by the Canadian authorities with aiding and abetting in the murder of 10,500 persons forty-three years earlier, in Kaunas.

He became a professional policeman in 1928 serving with the Order Police (Ordnungspolizei); in 1935 transferred to the detective division called Kripo (Kriminalpolizei) where he joined the SS, card number 290 335.

[3][4][5] Rauca arrived in Canada on 13 December 1950 at Saint John, New Brunswick, aboard the Canadian ship Beaverbrae from Bremerhaven.

[3] The warrant listed several war crimes including the 18 August 1941 murder of 534 Jews from the Ghetto, perpetrated at Fort Four of the Kaunas Fortress over the edge of a prepared ditch.