Sir Rudolf Bing, KBE (January 9, 1902 – September 2, 1997) was an Austrian-born British opera impresario who worked in Germany, the United Kingdom and the United States, including as General Manager of the Metropolitan Opera in New York City from 1950 to 1972. He was naturalized as a British subject in 1946 and was knighted in 1971, although he spent decades living in the United States, where he died.

Born Rudolf Franz Joseph Bing in Vienna, Austria-Hungary to a well-to-do Jewish family (his father was an industrialist). Bing was an apprentice to a bookseller at the prestigious Viennese shop of Gilhofer & Ranschburg before moving on to Hugo Heller, who also ran a theatrical and concert agency. He then studied music and art history at the University of Vienna. In 1927, he went to Berlin, Germany, and subsequently served as general manager of opera houses in that city and in Darmstadt.

While in Berlin he married a Russian ballerina, Nina Schelemskaya-Schlesnaya. In 1934, with the rise of Nazi Germany, the Bings moved to the United Kingdom, where, in 1946, he became a naturalised British subject. There, together with Fritz Busch and Carl Ebert, he helped to found the Glyndebourne Festival Opera. After the war in 1947, he co-founded and was the first director of the Edinburgh International Festival in Scotland.

In 1949, he moved to the United States, and became General Manager of the Metropolitan Opera the following year, a post he held for 22 years. During the 1960s, he supervised the move of the old Metropolitan on Broadway and 39th Street, to its new quarters in Lincoln Center and presided over one of the most prominent eras of the Met. It was summed up in 1990 by James Oestreich in The New York Times as follows:

"Wielding his powerful position at the Metropolitan Opera with intense personal charisma over two decades, Sir Rudolf Bing ruled much of the operatic universe in autocratic fashion, nurturing young artists and cutting superstars down to size with equal enthusiasm. He oversaw the abandonment in 1966 of the stately but somewhat dilapidated old Metropolitan Opera House [which he then had razed] and the construction of a grand monument to his regime, the building the company now occupies, which dominates Lincoln Center. His conservative musical and dramatic bent, preference for Italian opera and concern for theatrical values yielded an identifiable artistic legacy."

During Bing's tenure the Met's artist roster became integrated for the first time. Marian Anderson became the first African American to sing a leading role in 1955. She was soon followed by Robert McFerrin, Gloria Davy, Mattiwilda Dobbs, Leontyne Price, George Shirley, Grace Bumbry, Shirley Verrett, Reri Grist, and many others. He was noted for his preference for European singers and an apparent lack of interest in some leading American performers. Beverly Sills had to wait until after Bing's retirement to make her Met debut in 1975, although Bing later said that not engaging Sills earlier was a mistake. He fostered the careers of many American artists. Roberta Peters, Leontyne Price, Anna Moffo, Sherrill Milnes, and Jess Thomas are just a few that flourished during his time.

Bing is also remembered for his stormy relationship with the era's most famous soprano, Maria Callas. After hiring her for the Met with a debut as Norma on opening night in 1956, he famously canceled her contract in 1958 when they could not come to terms regarding the roles she would sing. Bing invited Callas to return to the Met for two performances of Tosca in 1965, the year that turned out to be her final season in opera.

After leaving the Met, Bing wrote two books of memoirs, 5000 Nights at the Opera (1972) and A Knight at the Opera (1981).^{[citation needed]}