| Princess Elisabeth | |
| Full Name: | French: Elisabeth Marie Wilhelmine |
| Spouse: | Prince Ludwig Philipp of Thurn and Taxis |
| Issue: | Prince Anselm Iniga, Princess Eberhard of Urach |
| House: | Nassau-Weilburg |
| Father: | William IV, Grand Duke of Luxembourg |
| Mother: | Infanta Marie Anne of Portugal |
| Birth Date: | 7 March 1901 |
| Birth Place: | Luxembourg, Grand Duchy of Luxembourg |
| Death Place: | Schloss Hohenburg, Hohenburg, Bavaria, Germany |
| Burial Place: | St. Emmeram's Abbey, Regensburg |
Princess Elisabeth of Luxembourg (Elisabeth Marie Wilhelmine; 7 March 1901 - 2 August 1950) was the daughter of William IV, Grand Duke of Luxembourg, and his wife, 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. Two of Elisabeth's elder sisters reigned as sovereign Grand Duchess of Luxembourg and titular Duchess of Nassau: Marie-Adélaïde and Charlotte.
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 and Ludwig had two children, five grandchildren, sixteen great-grandchildren, and three great-great-grandchildren:
Prince Ludwig was killed in 1933 in a car accident. 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.