Marie Adelaide Princess of Luxembourg
- Category : 1924-births
- Type : MGE
- Profile : 1/3 - Investigating / Martyr
- Definition : Single
- Incarnation Cross : RAX The Sleeping Phoenix 2
Luxembourgish princess, as the third child and the second daughter of Grand Duchess Charlotte (1896–1985) and Felix of Bourbon-Parma (1893–1970).
She married Graf Karl Josef Henckel von Donnersmarck (7 November 1928 – 16 April 2008) on 10 April 1958. They had four children — three sons and a daughter and eight grandchildren.
She died on 28 February 2007, aged 82, in Fischbach, Luxembourg.