What is the collective noun for desk?

There isn't a specific, commonly used collective noun for desks.

You could use a more general collective noun, such as:

* A collection of desks

* A set of desks

* A group of desks

* A bank of desks (if they are arranged together)

You could also use a descriptive phrase depending on the context, like:

* A forest of desks (if there are many)

* A row of desks (if they are lined up)

Ultimately, the best choice depends on the specific situation.