The chapel of the Palace of Versailles, intended for the exclusive use of the king, is the fifth built in the history of the palace and has been a focal point in the daily life of the court during the Ancien Régime.

The first chapel was erected in the time of Louis XIII in a separate pavilion to the northeast of the palace. Today, the space it occupied is the basilica of the king's small apartment. This chapel, following the traditional French two-level palace model, was demolished in 1665 for the construction of the Grotte de Thétis.

The second chapel was built during the second construction campaign (1669-1672) under the direction of Louis Le Vau. It was located in the grand appartement de la reine and formed a symmetrical pair with the salon de Diane in the grand appartement du roi. It was used until 1678, when it was replaced by a new chapel and the space was transformed into the salle des gardes de la reine.

The third chapel, located next to the salle des gardes de la reine, was used briefly by Louis XIV before it was deemed inadequate. In 1682, this space became the grande salles des gardes de la reine and a new chapel was built.

The fourth chapel, built with the expansion of the aile du Nord, was erected on the site of the Grotte de Thetis, demolished in 1682. It included a vestibule known as the hall of plenty, which served as the entrance. This chapel was used until 1710 and witnessed numerous important events during the reign of Louis XIV. Today, the Salon d'Hercule and the lower hall occupy this space.

The fifth and last chapel of the Palace of Versailles, begun in 1689 by Jules Hardouin-Mansart and completed in 1708 by his brother-in-law Robert de Cotte, is the largest royal chapel in the palace. Consecrated in 1710 and dedicated to Saint Louis, patron saint of the Bourbons, this chapel anticipates the neoclassicism of the 18th century with its Corinthian colonnade at the level of the tribune. Its interior is remarkable for its classical decoration and its vaulted ceiling, which breaks the predominant horizontality of the palace.

The floor is inlaid with polychrome marble, and the stairs leading to the altar feature a double "L" monogram interlaced, representing Saint Louis and Louis XIV. The decoration includes Old and New Testament themes, with paintings by Antoine Coypel and Charles de la Fosse, among others.

During the 18th century, the chapel witnessed important court events, such as the wedding of Marie Antoinette and the future Louis XVI on May 16, 1770, and ceremonies related to the Order of the Holy Spirit. Deconsecrated in the 19th century, today it is used for state and private events, as well as musical concerts. The chapel organ, built by Robert Clicquot and Julien Tribuot between 1709 and 1710, officially debuted on June 8, 1710 with Jean-Baptiste Buterne as organist, and has been a centerpiece of musical events held in the chapel ever since.