How do you say my siblings names are in french?

The most common way to say "my siblings' names are..." in French is:

Mes frères et sœurs s'appellent...

Here's a breakdown:

* Mes: My (plural possessive)

* frères: brothers

* et sœurs: and sisters

* s'appellent: are called (plural form of "s'appeler", meaning "to be called" or "to be named")

You would then follow this phrase with the names of your siblings. For example:

Mes frères et sœurs s'appellent Thomas, Marie et Jean. (My siblings are called Thomas, Marie, and Jean.)

Note: If you only have brothers, you would say "Mes frères s'appellent..." and if you only have sisters, you would say "Mes sœurs s'appellent...".