If you ask most people, they would probably tell you that you need a college education and degree hanging on your wall in order to make it big and become wealthy. That may be true for some, but for a select few in this world, they just seem to have what it takes to make millions, even billions, without any type of degree to their name. It starts with an idea and that idea develops into a plan that leads to a successful business, product or company that takes off and makes the developer or owner very wealthy. There are several billionaires that have never finished college. Some have started college, spent some time studying, and ultimately dropped out to pursue their dream. And they have gone on to build an enormous net worth for themselves. Here is a list of 20 billionaires who have dropped out of college; some you are already familiar with, while others may surprise you.