How do you say musical theatre in French?

The most common and direct translation of "musical theatre" in French is "théâtre musical".

Here are a few other options, depending on context and nuance:

* Opéra-comique: This term is more specific and refers to a French genre of light opera that includes spoken dialogue.

* Comédie musicale: This is a more general term for any kind of musical theatre.

* Spectacle musical: This term is more descriptive and emphasizes the entertainment aspect of musical theatre.

Ultimately, the best translation depends on the specific context and the desired level of formality.