Enrico Toselli, Count of Montignoso (March 13, 1883 – January 15, 1926), was an Italian pianist and composer. Born in Florence, he studied piano with Giovanni Sgambati and composition with Giuseppe Martucci and Reginaldo Grazzini. He embarked on a career as a concert pianist, playing in Italy, European capital cities, Alexandria and North America.
Toselli's fame largely derives not from his musical ability but from his scandalous elopement with Archduchess Louise of Austria, the former Crown Princess of Saxony, in 1907. She had previously deserted her husband, Frederick Augustus of Saxony, and they had divorced in 1903. Her ex-husband became king of Saxony in 1904.
Toselli's marriage ended in divorce in 1912. They had one son, Carlo Emanuele (7 May 1908 – 1969).
Toselli's memoirs of his marriage to royalty, Mari d’altesse: 4 ans de mariage avec Louise de Toscane, ex-princesse de Saxe, were published in French after his divorce.
- Luisa di Toscana. La mia storia, Societa' Editrice Italiana, Milano (1911).
- Enrico Toselli. Mari d’altesse: 4 ans de mariage avec Louise de Toscane, ex-princesse de Saxe, Albin Michel Éditeur, Paris (1912).
- Enrico Toselli. Il mio matrimonio con Luisa di Sassonia, Italian translation by Paolo Reni, Societa' Editrice Italiana, Milano (1912).
- Leonardo Previero. Enrico Toselli, Il musicista della Serenata, Edizioni Polistampa, Firenze (1997).