The Palace of Queluz is an 18th-century palace located at Queluz, a city of the Sintra Municipality, in the Lisbon District, on the Portuguese Riviera. One of the last great Rococo buildings to be designed in Europe, the palace was conceived as a summer retreat for King José I's brother, Pedro of Braganza, later to become husband and king jure uxoris to his own niece, Queen Maria I. It eventually served as a discreet place of incarceration for Maria I, when she became afflicted by severe mental illness in the years following Pedro III's death in 1786. Following the destruction of Ajuda Palace by fire in 1794, Queluz Palace became the official residence of the Portuguese Prince Regent João, and his family, and remained so until the royal family fled to the Portuguese colony of Brazil in 1807, following the French invasion of Portugal.

Queluz is a city within the Sintra Municipality, on the Portuguese Riviera, in the Lisbon metropolitan area of Portugal. It is famed as the home of Queluz National Palace, the 18th century pleasure palace of the Portuguese Royal Family, as well as notable institutions like the Portuguese School of Equestrian Art. Queluz had a population 78,273 inhabitants in 2001.