Rostislav Doboujinsky (3 April 1903 – 23 June 2000) was a Russian designer of costumes, masks, sets and interiors, and a painter and illustrator. He belonged to the second generation of Russian artists who developed the tradition of the 'Ballets Russes' in Western Europe. He was noted for his work on Louis Jouvet's Ondine by Jean Giraudoux in the 1930s and Max Ophul's film Le Plaisir in 1951, for the mouse masks and costumes he created for Rudolf Nureyev's The Nutcracker (1967), the costumes for The Sleeping Beauty ballet at London's Covent Garden (1968) and the animal masks for The Tales of Beatrix Potter (1971). He achieved international success with his masks for Alfredo Arias's adaption of Balzac's Peines de Coeur d'une Chatte Anglaise (1977).

Rostislav Mstislavovitch Doboujinsky was born on 3 April 1903 in Saint Petersburg, Russian Empire. He was the eldest son of ballet and opera designer Mstislav Valerianovich Doboujinsky, who co-founded the Le Monde de l'art movement - mir iskusstva - with Alexandre Benois and Sergei Diaghilev. Introduced from childhood to the world of the arts by his father, he took classical secondary studies in Russia and attended the Higher School of Fine Arts in Petrograd. In 1920 he worked as assistant designer at the Gorky theatre in Petrograd, in 1921 received his first stage design credit and in 1922 worked as set and costume designer for avant-garde and research group “Le Jeune Theater”. In 1924, the family fled to Lithuania where the young Doboujinsky was employed at the Kaunas theatre. A year later Rostislav moved to France with his wife Lydia, where he worked as a set designer and Lydia founded a fashion house which supplied costumes to ballets in Sweden and Monte Carlo. From 1925–27 he also studied at the National School of Decorative Arts and the Faculty of Letters in the Sorbonne. In 1939, Doboujinsky designed the costumes for Ondine, then worked with Christian Bérard, Leonor Fini, Lila de Nobili, and founded his own set workshop with Lydia. In 1950, he became a member of Societe des auteurs, compositeurs et editeurs de musique (SACEM).

Lila de Nobili brought Doboujinsky over from Paris to make animal masks for the first act of The Sleeping Beauty at Covent Garden. According to the V&A, Doboujinsky's wolf mask for this ballet was:

"a superb example of animal headdress-making. It was devised by the great mask-maker Rostislav Doboujinsky... Dancing under the heat of stage lights is uncomfortable, and having to wear full head mask is not popular with the performers, so the masks have to be as light as possible and give some ventilation. By the 1960s, new materials allowed Doboujinsky to create heads that were substantial but light enough to be worn for long periods, give as wide an angle of vision as possible and try to ensure that the wearer did not overheat."

While at Covent Garden, Doboujinsky talked with Richard Goodwin and Christine Edzard, the producer and writers for The Tales of Beatrix Potter (1971). In October 1969, he agreed to make a sample mask for The Tales' mouse character 'Hunca Munca', whose face is “perhaps the most appealing in the film”. He remade the mask thirteen times over the winter, working “at his own pace – and to his own standard of perfection” until he was satisfied with the fourteenth attempt in February 1970. Doboujinsky collaborated with Christine Edzard on the masks “on which much of the picture's success depended”. His original masks for the film, made of bike helmets, polystyrene, hand-sewn hair and vision holes covered in gauze, had to be recreated for the stage, with a larger field of vision for the dancers. The artist used moulds of the originals, drilling hundreds of holes at the front and covering the mask in nylon hair “using electrostatic charges.”

A collaboration in the 1960s with Renzo Mongiardino at the International Second World Congress of Man-Made Fibres Gala launched Doboujinsky into interior design, where he worked alongside other outstanding designers including Luchino Visconti, Franco Zeffirelli and Giorgio Strehler. The Great Gala was held at the Royal Albert Hall in London on 3 May 1962, and was “A Gala Divertimento of music, song and dance and brilliant decor” featuring renowned artists including Yehudi Menuhin. It was staged by Zeffirrelli with costumes by Lila de Nobili, orchestra conducted by Adrian Boult and design by Mongiardino. Tonton created a 20 ft tall chandelier surrounded by a dozen smaller ones, each piece of 'crystal' created using tiny pastry molds.

His first work for the Rothschild family was a coming-of-age party at the Château de Ferrières near Paris for which he made a dozen big plastic chandeliers for the ballroom and an enormous candelabra for the roof. Opulent chandeliers became a Doboujinsky trademark. Another project was the refurbishment in 1974 by Mongiardino's team of one of the Rothschild residences – the Hôtel Lambert on the Île Saint-Louis in Paris. Doboujinsky designed a fake cordovan-leather dado and borders to frame a series of 17th century panels depicting David's triumph over Goliath, across the four walls of one room. For Marie-Helene de Rothschild's bedroom he created extravagant wall coverings inspired by a 17th century rug.

Doboujinsky‘s technique was a combination of “unorthodox materials” and “painstaking craft”. For the dado at Hôtel Lambert he made a shallow mould, adding latex to it to make sheets of embossed “leather’ which he gilded and glazed using centuries-old methods. Designer Claudio Briganti described Doboujinsky as “enormously inquisitive”, exploring “scores of craft techniques” rather than relying simply on stencils and “faux-marbre”. For Marie-Helene de Rothschild’s bedroom wallcoverings he took inspiration from a very old, “enormous” and “very worn” Persian rug whose weave could not have been reproduced. Instead Doboujinsky combined painting methods, using pigments of oil paints and gouache applied to the back of canvas which seeped through to the front to evoke the colours and motifs of the original and “suggest its lovely threadbare quality”.