Alfredo Catalani (19 June 1854 – 7 August 1893) was an Italian operatic composer. He is best remembered for his operas Loreley (1890) and La Wally (1892). La Wally was composed to a libretto by Luigi Illica, and features Catalani's most famous aria "Ebben? Ne andrò lontana." This aria, sung by American soprano Wilhelmenia Fernandez, was at the heart of Jean-Jacques Beineix's 1981 film Diva. Catalani's other operas were much less successful.

Catalani was trained at the Milan Conservatory, where his teachers included Antonio Bazzini. Despite the growing influence of the verismo style of opera during the 1880s and early 1890s, Catalani chose to compose in a more traditional manner, which had traces of Wagner in it. As a result, his operas (La Wally excepted) have largely lost their place in the modern repertoire, even compared to those of Massenet and Puccini, whose style his own periodically resembles. (Catalani much resented Puccini's emergence and even accused Puccini, falsely, of plagiarism.)