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Luxembourg

Grand Duchy of Luxembourg

Civil lawUnitary parliamentary constitutional monarchyReviewed· 2026-08-02
Capital
Luxembourg City
Population
670,000
Languages
Luxembourgish, French
Currency
EUR

Luxembourg · Constitution

Constitution of the Grand Duchy of Luxembourg

The 1868 constitution was recast rather than replaced by a wide-ranging revision in force since 1 July 2023, which renumbered the text, modernised the description of the Grand Duke’s powers, and strengthened judicial independence through a new National Council of Justice. Revision requires two successive votes in the Chamber of Deputies by a two-thirds majority.

The constitutional text

The 1868 constitution was recast rather than replaced by a wide-ranging revision in force since 1 July 2023, which renumbered the text, modernised the description of the Grand Duke’s powers, and strengthened judicial independence through a new National Council of Justice. Revision requires two successive votes in the Chamber of Deputies by a two-thirds majority.

Separation of powers

A unitary state with communes as the only subordinate tier. Like France and Belgium it maintains a dual judicial structure: ordinary courts under the Cour de cassation and a separate administrative order under the Cour administrative, with the Constitutional Court resolving conflicts between them.

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