Henri Désiré Landru (1869–1922) was a French serial killer.
Landru may also refer to:
- Landrú, byline of Argentine political cartoonist Juan Carlos Colombres (1923–2017)
- Landru (film), a 1963 French film about the serial killer
- Landru, a character in the 1963 Star Trek episode "The Return of the Archons"