Each year since 2001, Efraim Zuroff of the Simon Wiesenthal Center produces an Annual Status Report on the Worldwide Investigation and Prosecution of Nazi war criminals which, since at least 2005, includes a list of "most wanted" criminals that had never been convicted.
Vladimir Katriuk (October 1, 1921 - May 22, 2015. Last known location: Canada, reported to have died in May 2015, aged 93.)
Alfred Stark or Stoerk (Last known location: Germany. Last known news: former corporal convicted in absentia by Rome Military Court for participating in killing of 117 Italian prisoners of war on Greek island of Cephalonia.)
Johann Robert Riss (Last known location: Germany. Last known news: on May 25, 2011, the former sergeant found guilty in absentia for participating in killing of 184 civilians near Padule di Fucecchio in Italy)
X - unnamed person (Last known location: Denmark) wanted for murder of Jews in Bobruisk, Belarus
Y - unnamed person (Last known location: Germany) wanted for being accessory to the murder of Hungarian Jews in Auschwitz
Z - unnamed person (Last known location: Norway ) wanted for murder of Jews in various locations in Poland and Ukraine
Oskar Groening (age 94. Last known news: Trial in Hannover, Germany, July 2015. Found guilty of being accessory to murder of 300,000 people and sentenced to four years imprisonment.)
Algimantas Dailidė (age 94. Last known news: Deported from USA to Germany in 2004. Sentenced to five years imprisonment, but was diagnosed "medically unfit to be punished".)
Charles Zentai - listed until 2012, the Australian High Court ruled that Zentai could not be sent for trial to Hungary, alleging that the category of "War Crimes" did not exist at that time in Hungarian law.
Klaas Carel Faber - listed until 2012, died in the process of extradition from Germany to Netherlands on 24 May 2012, aged 90.
Sándor Képíró - listed until 2011, tried and found not guilty that year; died 3 September 2011.
Ivan Demjanjuk - listed until 2009, deported to Germany for trial in 2009, and was convicted in 2011 pending appeal, died 17 March 2012. He died before his appeal could be tried by the German Appellate Court, and as a result, his previous conviction was not upheld. A few days after his death, the German court clarified that, according to German law, Demjanjuk was "presumed innocent", that he did not have a criminal record, and that his previous interim conviction was invalidated.
Heinrich Boere - listed until 2009, convicted 2010 and sentenced to life in prison. Died December 1, 2013.
Harry Männil - listed until 2009, cleared of charges in 2005 after four-year investigation, died 11 January 2010.
Erna Wallisch - listed until 2007, died 21 February 2008 while under investigation.