Felix Kolmer (3 May 1922 – 5 August 2022) was a Czech Holocaust survivor and physicist, specialising in the field of acoustics.

[3] At one point, he was interned in the Small Fortress, and the treatment of prisoners by the SS that he witnessed there prompted him to join the underground resistance.

He was able to use his Aufbaukommando status to temporarily protect some of his family members, including his grandmother, mother, and fiancée.

[3] He managed to escape Auschwitz by jumping on a transport with a friend, which headed to the Gross-Rosen camp, specifically the subcamp Friedland.

He was interviewed by Post Bellum, an oral history organisation, as part of their project Stories of the 20th Century.