Antonia was a female guard at the Mauthausen concentration camp from November 1944, until May 1945.

Antonia Rachbauer was born on April 12, 1904 in Neukirchen, Austria. On November 1, 1944 she became a female guard at Mauthausen, a concentration camp in Austria. She stayed there until the camp was liberated in May 1945 and has never been prosecuted.