Pauly D's Trademark -- The Ultimate Spin Job

Pauly D is now the third "Jersey Shore" star to try and lock down his nickname -- but this time, he wants to use the trademark strictly for the DJ booth.

TMZ has learned Pauly has applied for a trademark on the name "DJ Pauly D" -- strictly for use "in the nature of disc jockey services."

On the application, filed with the U.S. Patent and Trademark Office, Pauly points out that he has no intention of trying to exclusively own the rights to the word "DJ" -- apart from "Pauly D."

As we've previously reported, The Situation and Snooki have also applied for trademarks on their nicknames.