Of course, there is. You even have detailed instructions about how to do it on Wikipedia. However, keep in mind that it's a double-edged sword. If you make a page about yourself, you have to make it neutral, due to Wikipedia's "neutral point of view" policy. You also have to provide reliable links and verifiable sources. Furthermore, people will be able to add to your page. Thay can add good or bad things. However, there is no way to defend yourself against it.