| Anna Maria Zwanziger | |
| Birthname: | Anna Margaretha Zwanziger |
| Birth Date: | 7 August 1760 |
| Birth Place: | Nuremberg, Holy Roman Empire |
| Death Place: | Kulmbach |
| Cause: | Execution by beheading |
| Conviction: | Murder |
| Sentence: | Death |
| Victims: | 4 |
| Beginyear: | 1801 |
| Endyear: | 1811 |
| Country: | Germany |
Anna Margaretha Zwanziger (7 August 1760 – 17 September 1811) was a German serial killer.[1] She used arsenic, which she referred to as "her truest friend".
From 1801 until 1811, Zwanziger was employed as a housekeeper at the home of several judges in Germany. She would poison her employers with arsenic, and then nurse them back to health to gain their favour.[1] She poisoned three people and attempted to poison several others[1] She killed four people, one of whom was a baby.
Zwanziger was judged guilty of murder and sentenced to death. Before she was beheaded, she said it was probably a good thing she was to be executed, as she did not think she would be able to stop.[2]