Charlotte (Charlotte Adelgonde Elisabeth Marie Wilhelmine; 23 January 1896 – 9 July 1985) was Grand Duchess of Luxembourg from 14 January 1919 until her abdication on 12 November 1964. Her reign is the longest of any Luxembourgish monarch since 1815 when the country was elevated to a Grand Duchy.
She acceded to the throne on 14 January 1919 following the abdication of her sister, Marie-Adélaïde, due to political pressure over Marie-Adélaïde's role during the German occupation of Luxembourg during World War I. A referendum retained the monarchy with Charlotte as Grand Duchess regnant.
She married Prince Felix of Bourbon-Parma on 6 November 1919. They had six children.