House of Nassau-Weilburg of Nassau and Luxembourg
Country	Nassau, Luxembourg
Parent house	House of Nassau, House of Bourbon-Parma
Titles	Count of Nassau-Weilburg, Princely Count of Nassau-Weilburg, Duke of Nassau, Grand Duke of Luxembourg
Founder	John I of Nassau-Weilburg
Current head	Henri of Luxembourg
Founding year	1344

The House of Nassau-Weilburg ruled a division of Nassau, which was a state in current Germany, a state that existed from 1344 to 1816. The sovereigns of this house afterwards governed the Duchy of Nassau until 1866, and since 1890 they have governed the nation of Luxembourg. The House of Nassau-Weilburg became extinct in the male line with the death of Grand Duchess Charlotte of Luxembourg in 1985. However, the name has been carried on in the bilineal line, with the official name of the reigning house of Luxembourg remaining Nassau-Weilburg. Since the death of the Grand Duchess, members of the reigning house are cognatically members of the House of Nassau-Weilburg and agnatically members of the House of Bourbon-Parma.

Religion

Grand Dukes of Luxembourg, Guillaume IV and Adolphe, were Protestants; the religion of the House of Nassau, changed after Guillaume's marriage to Marie Anne of Portugal, who was Roman Catholic.

Sovereigns from the House of Nassau-Weilburg

Nassau

Counts of Nassau-Weilburg

• 1344 – 1371: John I
• 1371 – 1429: Philipp I
• 1429 – 1442: Philipp II and John II
• 1442 – 1492: Philipp II
• 1492 – 1523: Louis I
• 1523 – 1559: Philipp III
• 1559 – 1593: Albrecht
• 1559 – 1602: Philipp IV
• 1593 – 1625: Louis II
• 1625 – 1629: William Louis, John IV and Ernst Casimir
• 1629 – 1655: Ernst Casimir
• 1655 – 1675: Frederick
• 1675 – 1688: John Ernst

Princely counts of Nassau-Weilburg

• 1688 – 1719: John Ernst
• 1719 – 1753: Charles August
• 1753 – 1788: Charles Christian
• 1788 – 1816: Frederick William
• 1816: Wilhelm

Dukes of Nassau

• 1816 – 1839: Wilhelm
• 1839 – 1866: Adolphe

Grand Dukes of Luxembourg

Main article: List of Grand Dukes of Luxembourg

• 1890 – 1905: Adolphe
• 1905 – 1912: William IV
• 1912 – 1919: Marie-Adélaïde
• 1919 – 1964: Charlotte
• 1964 – 2000: Jean
• 2000 – Present day: Henri