Leschenault may refer to:
- Jean Baptiste Leschenault de la Tour (1773–1826), French botanist and ornithologist
- Leschenault, Western Australia, an outer suburb of Bunbury
- Leschenault Estuary, an estuarine lagoon to the north of Bunbury, Western Australia
- Leschenault, a former name of the Electoral district of Mitchell (Western Australia)