The Bureau du Roi (French pronunciation: [byʁo dy ʁwa], 'the King's desk'), also known as Louis XV's roll-top desk (French: Secrétaire à cylindre de Louis XV), is the richly ornamented royal cylinder desk which was constructed at the end of Louis XV's reign, and is now again in the Palace of Versailles.

The full-scale desk was finished in 1769 by his successor, Jean Henri Riesener, who had married Oeben's widow.

Made for the new Cabinet du Roi at the Palace of Versailles, it was transferred to the Louvre Museum in Paris after the French Revolution, but has been returned to the Palace of Versailles in the 20th century where it stands again in the room where it was standing before the Revolution: the Cabinet intérieur du Petit Appartement ('Inner study of the Private Apartments'), the famous study room where kings Louis XV and Louis XVI carried out their daily work, and where King Louis XVI decided to support the American insurgents in 1777.

The original design was to have a miniature bust of Louis XV on top, but it was replaced by Minerva after his death in 1770.

His copy was the first of a number of replicas that were produced from the 1870s onwards by leading cabinetmakers in Paris, including four examples by François Linke.