Instructions
Search the web and find out if the World Wrestling Entertainment star you would like an autograph from has a website. Oftentimes you can contact them via their site and ask if they can mail you an autograph if you mail them something to sign.
Attend fan conventions and meet and greets, which are held all across the country with several big names always in attendance. These functions often have merchandise tables set up where you can chat with the wrestlers and get an autograph at the same time.
Check out your local sports memorabilia store and hobby shop. In some cases they may have some signed items on hand. Comic-book stores also carry autographs on occasion. Determine if the autograph you are looking for is on auction sites like eBay. Depending on who you are looking for, be ready to pay a pretty penny.
Wait in the lobby of the hotel where the WWE is staying. As long as you are out of the way not causing trouble you may end up with some choice autographs.
Go to live events and wait until the wrestlers are arriving or leaving the show. If you live in an area visited regularly by WWE, simply figure out where talent leaves from and see if you can obtain signatures that way.