Maria João Pires (Portuguese: [mɐˈɾiɐ ʒwɐ̃ũ̯ ˈpiɾɨʃ]; born in Lisbon, Portugal, 23 July 1944) is a pianist.
Her first recital was at the age of five, and at the age of seven she was already playing Mozart piano concertos publicly. Two years later she received Portugal's top prize for young musicians. In the following years, she studied with Campos Coelho at the Lisbon Conservatory, taking courses in composition, theory, and history of music. She continued her studies in Germany, first in the Musikakademie of Munich with Rosl Schmidt and then in Hanover with Karl Engel.
International fame came in 1970, when she won the Beethoven Bicentennial Competition in Brussels. Subsequently she performed with major orchestras in Europe, America, Canada, Israel and Japan, interpreting works by Bach, Beethoven, Schumann, Schubert, Mozart, Brahms, Chopin and other classical and romantic composers.
Her professionalism achieved worldwide recognition when a film (from 1999) was drawn to the attention of the press and went viral in 2013. At the start of a lunchtime concert in Amsterdam, she realised that she had rehearsed for a different Mozart concerto from the one the orchestra had started playing; quickly recovering, she played the concerto from memory.