I'm assuming you mean as an actor? Sorry, but no, no way. You see, studios only hire professional actors, highly trained and experienced ones. By the time you get all the needed experience and training, and by the time you get an agent to send you to professional auditions (which is how you get to professional auditions, you can't just show up and you certainly can't just get a role), and by the time you get enough experience from professional productions, you will be about 30. Also, by the way, as a professional actor you don't get to choose what to audition for, you would have to audition for anything you can. Even indies that don't make you a dime.
So what I'm saying is, it's not so much about your age. To be a professional actor at 15, you would have to start out (as in get into a good acting school, etc.) at 6. Also note that the vast majority of teens on movies and TV shows are *not* portrayed by teens but by adults who look younger. That's because at that age they have the experience I mentioned above, in addition to maturity and understanding of this business and, you know, the fact that they don't need the work permits minors need.
If it's something else you want to work as, sorry but no way. Again, not only because of your age. Studios only work with experienced people with references. They're not interested in children or even adults who don't already work in the industry. We're talking about MILLIONS of dollars that are put into those productions, studios can't give that wheel to just anyone.
You need to understand that it's not about you. This isn't a "Make a Wish." it's a business like any other business and a real job. Just like you wouldn't walk into a courtroom and act as a lawyer. You would go to law school first. So if you want to be a professional actor or anything else, pursue that - but not for a certain role on a certain production, that's unrealistic.