Il Divo are a multi-national classical crossover vocal group. Formed in the United Kingdom in 2003, Il Divo is a male quartet consisting of Swiss tenor Urs Bühler, American tenor David Miller, French baritone Sébastien Izambard, and American baritone Steven LaBrie. The group previously included Spanish baritone Carlos Marín until his death in 2021 from COVID-19 and replacement by LaBrie in 2023. Il Divo was created and promoted by Simon Cowell for the label Syco Music.

Crossover is a term applied to musical works or performers who appeal to different types of audience. This can be seen, for example, when a song appears on two or more of the record charts which track differing musical styles or genres. If the second chart combines genres, such as a "Hot 100" list, the work is not a crossover.