Rupert D'Oyly Carte (; 3 November 1876 – 12 September 1948) was an English hotelier, theatre owner and impresario, best known as proprietor of the D'Oyly Carte Opera Company and Savoy Hotel from 1913 to 1948.
Son of the impresario and hotelier Richard D'Oyly Carte, Rupert inherited the family businesses from his stepmother Helen. After serving in the First World War, he took steps to revitalise the opera company, which had not appeared in central London since 1909, hiring new designers and conductors to present fresh productions of the Gilbert and Sullivan operas in seasons in the West End. The new productions generally retained the original text and music of the operas. Carte launched international and provincial tours, as well as the London seasons, and he released the first complete recordings of the operas. He also rebuilt the half-century-old Savoy Theatre in 1929, opening the house with a season of Gilbert and Sullivan.
As an hotelier, Carte built on his father's legacy, expanding the Savoy Hotel, refreshing the other hotels and restaurants in the Savoy group, including Claridge's and the Berkeley Hotel, and introducing cabaret and dance bands that became internationally famous. He also increased marketing activities, including foreign marketing, of the hotels.
P. G. Wodehouse based a character in his novels, Psmith, on a Wykehamist schoolboy whom he identified as Rupert D'Oyly Carte. At his death, Carte passed the opera company and hotels to his only surviving child, Bridget D'Oyly Carte. The Gilbert and Sullivan operas, nurtured by Carte and his family for over a century, continue to be produced frequently today throughout the English-speaking world and beyond.