Alexandre Denéréaz or Alexandre Dénéréaz (31 July 1875 – 25 July 1947) was a Swiss musician, composer, organist and teacher in the Canton of Vaud.
Alexandre Denéréaz studied classics, science and music. In 1892 he left for Dresden where he enrolled for 4 years at the Royal Conservatory and worked the piano with Karl-Heinrich Doering (1834–1916), pipe organ with Julius Johannsen (1852–1921) and musical composition with Felix Draeseke (1835–1913). In 1896, he obtained the first prize for composition for his "First Symphony".
Alexandre Denéréaz died 25 July 1947 in Lausanne.