Jason Statham is a trained martial artist and has studied a variety of martial arts styles, including Wing Chun and Brazilian Jiu-Jitsu.
He has also done many of his own stunts in his movies and is known for performing his own fight scenes.
However, it is important to note that being a trained martial artist and being a legitimate martial artist are two different things.
Being a legitimate martial artist often requires a certain level of skill and proficiency in a specific martial art, as well as recognition and respect within the martial arts community. It is unclear if Jason Statham holds such a title.