German piano maker.

Born on 8 December 1842 in Münchberg (Oberfranken, Germany), and passed away on 7 September 1921 in Bamberg (Germany). He had three sons: Fritz, Reinhold and Julius.

He learned carpentry from his father and attended trade school in Wunsiedel. After graduating, he found work at Oldenburg and other piano manufacturers in Germany, and later at the Vienna factory of Johann Baptist Streicher. He soon opened his own factory in Münchenberg, which he moved to Bamberg in 1874. Neupert's was one of the first German establishments to manufacture harpsichords, clavichords and pianofortes. In 1900 he opened a shop in Nuremberg, followed by others in Munich and Bayreuth. His commercial success allowed him to hire engineers like Bruno Paul, Hermann Schwabe and Theodor Veil to improve the technical performance and aesthetic appeal of his instruments, but it was Gabriel von Seidl who advised him to build harpsichords in 1906. Max Reger, Elly Ney, Walter Braunfels, Edwin Fischer and Wilhelm Backhaus were just some of the noted pianist who played Neupert's instruments. A passionate collector, he amassed approximately two hundred and fifty different keyboard instruments which were exhibited for the first time in 1927. Two years later, a museum devoted to the Neupert collection opened in Nuremberg. He turned the piano business over to his children in 1918. His grandson, Hanns Neupert, published "Das Cembalo" in 1933. On 13 October of that same year, Manuel de Falla received a catalogue of J. C. Neupert instruments from Nuremberg.

El Germanisches Nationalmuseum de Nuremberg conserva la colección Neupert de instrumentos de teclado.