Radu Lupu (born November 30, 1945) is a Romanian concert pianist. He has won a number of the most prestigious awards in classical piano, including first prizes in the Van Cliburn International Piano Competition and the Leeds International Pianoforte Competition.

Lupu's concert appearances and recordings for Decca, though not frequent, consisting of a limited repertoire, have been consistently acclaimed. Although trained in the Russian pianistic tradition, he is particularly noted for his interpretations of the great 19th century German and Austrian composers, especially Franz Schubert, Johannes Brahms, Ludwig van Beethoven, and Wolfgang Amadeus Mozart.

He is also noted for performances of works by Czech composer Leos Janácek, and Hungarian composer Béla Bartók.Lupu made his American debut in 1972 with the Cleveland Orchestra, with Daniel Barenboim conducting in New York City, and with the Chicago Symphony Orchestra, with Carlo Maria Giulini conducting.

Whilst Lupu has performed with all of the major orchestras of the world and at major music festivals, he is a somewhat reclusive figure. He has regularly refused to grant interviews to journalists for over 30 years.

In one rare published interview, originally from 1991, Lupu expressed his philosophy of music-making as follows:"Everyone tells a story differently, and that story should be told compellingly and spontaneously.

If it is not compelling and convincing, it is without value."In his concert performances, Lupu does not use a piano bench, but instead an office chair. Lupu has participated in notable chamber-music partnerships with, among others, the violinist Szymon Goldberg, the soprano Barbara Hendricks, and his fellow pianist, Murray Perahia.