Princess Elisabeth of Luxembourg (Elisabeth Marie Wilhelmine; 7 March 1901 – 2 August 1950) was the daughter of William IV, Grand Duke of Luxembourg, and Infanta Marie Anne of Portugal.

In 1922, she married Prince Ludwig Philipp of Thurn and Taxis.

Elisabeth was the fifth-eldest daughter and child of William IV, Grand Duke of Luxembourg, and his wife, Infanta Marie Anne of Portugal.

Elisabeth married Prince Ludwig Philipp of Thurn and Taxis, fourth child and son of Albert, 8th Prince of Thurn and Taxis, and his wife, Archduchess Margarethe Klementine of Austria, on 14 November 1922 in Hohenburg, Bavaria.

Elisabeth died in 1950 at age 49, at their home, Schloss Niederaichbach and was buried next to her husband at St. Emmeram's Abbey, Regensburg.