Germaine Thyssens-Valentin (27 July 1902 – 7 July 1987) was a classical pianist of Franco-Dutch parentage, noted for her performances of French music. She studied under Gabriel Fauré at the Paris Conservatoire, and in the 1950s, after a long absence from performing while she raised a family of five children, she recorded a series of discs of Fauré's music that have been reissued on compact disc to considerable acclaim.
She was born as Germaine Suzanna Jeanne Thyssens in Maastricht in the Netherlands, the eldest of the three children of a Dutch father, born Joannes Jacobus Thijssen but known as Jean-Jacques Thyssens, and his wife Jeanne Caroline Schmidt, who was from Alsace. Jean-Jacques, who was director of Peugeot in Belgium, died in July 1907, when his eldest child was not quite five years old. Encouraged by her mother, she began to study the piano when she was about five years old, and later also studied the harpsichord. At the age of eight she made her concert debut playing Mozart's Piano Concerto No. 23 in A, winning high praise from the critics.
She studied at the Royal Academy of Liège, and in 1914, at the age of 13, entered the Conservatoire de Paris, which was then headed by Gabriel Fauré. She studied in the class of Isidor Philipp and later of Marguerite Long. To support herself while a student, she gave piano lessons and played incidental music in cinemas. In 1920 she was awarded the first prize at the Conservatoire in piano and in musical history.
In December 1924 Thyssens married Paul Valentin, and hyphenated his name with hers. By now she had begun to establish herself as a piano soloist, appearing with leading chamber musicians and with the Concerts Colonne, but she gave up her musical career completely to raise her family of five children.
After 25 years away from professional music, Thyssens-Valentin resumed her career in 1951, with a performance of the Mozart concerto in which she had made her debut as an eight-year-old. The conductor for her return concert was Albert Wolff, through whom she was introduced to the director of the Salzburg Festival, where she made her first appearance the following year. Between 1956 and 1959, she recorded a series of discs for the French recording company Ducretet-Thomson. They were not widely available outside France, and as the company failed to keep pace with the introduction of stereophonic recording its catalogue went out of print during the 1960s.