- 6 January – Last execution of about 70 Poles sentenced to death by a German summary court. Four Jewish women, sentenced for helping to prepare the Sonderkommando Mutiny, are hanged on the gallows at the last public execution.
- 17 January – Start of the Death Marches – the SS evacuate almost 60,000 KL Auschwitz prisoners.
- 21-26 January – Germans blow up the gas chambers and crematoria in Birkenau.
- 27 January – 7,000 prisoners live to see the liberation of Auschwitz by units of the Soviet army.