Is a collective noun for pickpockets?

There isn't a widely recognized collective noun specifically for pickpockets.

You could use some more general collective nouns, like:

* A band of pickpockets

* A gang of pickpockets

* A crew of pickpockets

* A pack of pickpockets

You could also use a more descriptive phrase like:

* A nest of pickpockets

* A swarm of pickpockets

* A clutch of pickpockets

The best choice will depend on the context and the tone you want to create.