Juana Bormann was a prison guard at several Nazi death and concentration camps, and was executed as a war criminal at Hameln after a trial in 1945.

At her trial in late 1945 Juana Bormann said she had joined the SS auxiliary in 1938 "...to earn more money." She first served at the Lichtenburg concentration camp in Saxony under SS Oberaufseherin Jane Bernigau with forty-nine other SS women. In 1939 she was assigned to oversee a work crew at the new Ravensbrück women's camp near Berlin. In March 1942 Bormann was one of a handful of women selected for guard duty at Auschwitz I in Poland. Short in stature, she was known for her cruelty. Victims called her "Weisel" and "the woman with the dogs." In October, 1942 Bormann went to Auschwitz Birkenau as an Aufseherin. Her supervisors included Maria Mandel, Margot Drexler (Drechsel, Dreschel) and Irma Grese.

In 1944, as German losses mounted, Juana Bormann was transferred to the auxiliary camp at Hindenburg (now called Zabrze) in Silesia. In January 1945 she returned to Ravensbrück. In March she arrived at her last post, Bergen-Belsen near Celle where she served under Josef Kramer, Irma Grese and Elizabeth Volkenrath (all of whom had served with her in Birkenau). On April 15, 1945 the British army took Bergen-Belsen, finding over 10,000 corpses and 60,000 survivors. The liberators forced all SS personnel to carry the dead.

Bormann was later incarcerated and interrogated by the military, then prosecuted at the Belsen Trial which lasted from September 17 to November 17, 1945. The court heard testimony relating to murders she had committed at Auschwitz and Belsen, sometimes unleashing her "big bad wolfhound" German shepherd on helpless prisoners. She was found guilty and hanged (along with two other SS women, Grese and Volkenrath) on December 13, 1945. Her executioner, Albert Pierrepoint (one of the most prolific judicial hangmen of the 20th century) later wrote, "She limped down the corridor looking old and haggard. She was forty-two years, only a little over five feet high. She was trembling as she was put on the scale. In German she said: "I have my feelings."