Marie Therese Marchadier
- Category : 1881-births
- Type : PM
- Profile : 2/5 - Hermit / Heretic
- Definition : Single
- Incarnation Cross : RAX Unexpected 3
French homicide victim, she was slain by serial killer Henri Désiré Landru (1869-1922) who murdered at least seven women in the village of Gambais between December 1915 and January 1919.
Marie-Thérèse Marchadier was a career prostitute and a familiar sight on the street outside her apartment on Paris's Rue Saint-Jacques, where she liked to walk her two beloved Belgian griffon dogs. At Landru's trial, the prosecution claimed that he first met the heavily indebted Marchadier in October 1918 after she advertised to sell her furniture. Circumstantial evidence suggests that he may have encountered her several years earlier in the port of Le Havre or the provincial town of Beauvais.
Landru murdered her on 30 January 1919 in Gambais when she was aged 37. He also strangled her three dogs.