The Hollywood hunk was alleged to be joining singer/actress Dannii Minogue and The Full Monty star Hugo Speer in Pedrero's new British spy film.
But Pattinson is baffled by the claims - because he hasn't signed up for anything with his two-time Harry Potter pal, according to GossipCop.com.
Asked whether Pattinson will be starring in the movie, his representative simply told the website, "No."
Pedrero performed stunts in all the Potter films, as well as James Bond movies Goldeneye and The World Is Not Enough.
Pedrero, who has performed stunts in all the Potter films as well as James Bond movies Goldeneye and The World Is Not Enough and Braveheart and The Mummy, will direct the British spy movie at Pinewood Studios in England, where the 007 movies are shot.
The film, about American and MI6 agents who team up to take down a psychotic dictator, also features The Full Monty star Hugo Speer.