if you are speaking of the 9mm parabellum , there are a few out there, but the drawback is that the case is rimless and therefore would need to use half moon or full moon clips for the brass to be extracted....

and if you are just looking for cartridges in the 9mm family.... why not the .38 special, .38 super, .357 mag , 357 max, etc etc etc

Taurus makes the pt-905 in 9mm

Ruger makes a Single Action 357 Blackhawk that comes with an extra cylinder for 9mm.
Ruger® New Model Blackhawk® Convertible Single-Action Revolver Models

Don't get me wrong. I'm a revolver guy; I have more six shooters than any other type of weapon (38/357s mainly), but I use them for fun at the range. When it comes to the 9mm, especially for self-defense, I have to ask, why limit myself to 6 rounds when 15 will do? Just an early morning thought.

May you favorite gun always be the one you are carrying.