Édouard-Théodore Nicole (c. 1823 – 19 February 1900), known as Léonce, was a 19th-century French actor and singer.
After studying law, he made his stage debut at the Théâtre de Belleville.
After some time at the Théâtre de l'Athenée, he played in the premieres of Tromb-al-ca-zar, Croquefer, Orphée aux Enfers, Mesdames de la Halle and Monsieur Choufleuri.
For several years, he appeared at the Théâtre des Variétés including in Les brigands, Le docteur Ox, La Vie parisienne and La Périchole.
After an unwise investment in a café, he ended his life in poverty.