You’re never too young to pursue your dreams — and these entrepreneurs prove it. This fun infographic, put together by the folks at EssayMama (a service that assists students with writing papers), focuses on business owners who established their ventures before earning their diplomas. From Briton Hadden and Henry Luce, co-founders of Time, to  (of course!) Facebook founder Mark Zuckerberg, these enterprising folks prove that age is no barrier for becoming an entrepreneur.

We’re hoping to see some awesome women on these lists in the near future (and if you know of any, please leave a message in the comment section). But in the meantime, scroll down to learn about several business owners who got started early: