Alix, Princess de Ligne (Alix Marie Anne Antoinette Charlotte Gabrielle; 24 August 1929 – 11 February 2019) was the fourth daughter and youngest child of Charlotte, Grand Duchess of Luxembourg, and Felix of Bourbon-Parma.

Facing the German invasion in 10 May 1940 during World War II, the Grand Ducal Family of Luxembourg left the country to find refuge in Portugal, after receiving transit visas from the Portuguese consul Aristides de Sousa Mendes, in June 1940.

After travelling through Coimbra and Lisbon, the family first stayed in Cascais, in Casa de Santa Maria, owned by Manuel Espírito Santo, who was then the honorary consul for Luxembourg in Portugal.

By July they had moved to Monte Estoril, staying at the Chalet Posser de Andrade.

She was buried at Beloeil Castle in Belgium and a service was held at the Mëchelskierch church in Luxembourg City.