Regis PhilbinVia Getty ImagesLisa KudrowVia Getty ImagesKevin CostnerVia Getty Images
Lisa Kurdrow has a degree in biology from Vasaar. Regis Philbin has a degree in sociology from Notre Dame. Kevin Costner has a degree in business from California State University at Fullerton.
Rooney MaraVia Getty ImagesNatalie PortmanVia Getty ImagesGerard ButlerVia Getty ImagesClaire DanesVia Getty ImagesJon StewartVia Getty ImagsIlana GlazerVia Getty Images
Gerard Butler studied law at Glasgow University. Claire Danes studied psychology at Yale, Jon Stewart at William & Mary, Natalie Portman at Harvard, and Rooney Mara and Ilana Glazer at NYU.
Rachel RayVia Getty ImagesSean ConneryVia Getty ImagesJim CarreyVia Getty ImagesCatherine Zeta-JonesVia Getty ImagesWill SmithVia Getty ImagesTim AllenVia Getty Images
Tim Allen has a degree in communications from Western Michigan University. The others never went to college.
Ray RomanoVia Getty ImagesReese WitherspoonVia Getty ImagesMontel WilliamsVia Getty Images
Ray Romano majored in accounting at Queens College but dropped out after two years. Reese Witherspoon majored in English literature at Stanford but dropped out, too. Montel Williams has a degree in engineering and international security affairs at the United States Naval Academy.
Jake GyllenhaalVia Getty ImagesWanda SykesVia Getty ImagesEva LongoriaVia Getty Images
Jake Gyllenhaal studied eastern religion and philosophy at Columbia but dropped out after two years. Eva Longoria studied kinesiology at Texas A&M University-Kingsville. And Wanda Sykes studied marketing at Hampton University.
Harrison FordVia Getty ImagesSteve MartinVia Getty ImagesConan O’BrienVia Getty Images
Conan O'Brien studied history and American literature at Harvard. Harrison Ford studied philosophy at Ripon College but dropped out just before graduation. Steve Martin studied philosophy at California State University at Long Beach before transferring to UCLA to study theater where he later dropped out.
Brad PittVia Getty ImagesSteve CarellVia Getty ImagesGeorge ClooneyVia Getty Images
George Clooney studied journalism at the University of Kentucky but dropped out after two years. Brad Pitt also studied journalism but later dropped out at the University of Missouri. Steve Carell graduated from Denison University with a degree in history.
Sasha Baron CohenVia Getty ImagesRon JeremyVia Getty ImagesWeird AlVia Getty Images
Ron Jeremy has not only a master's degree in special education, but also has a bachelor's in education AND theatre. Weird Al has a degree in architecture from California Polytechnic State University. Sasha Baron Cohen has a degree in history from Cambridge University.
Ellen DeGeneresVia Getty ImagesMark ZuckerbergVia Getty ImagesRussell SimmonsVia Getty ImagesSteve JobsVia Getty ImagesMartha StewartVia Getty ImagesOprahVia Getty Images
Out of that group, Martha Stewart is the only one to graduate with a degree. She has a degree in European and architectural history from Barnard College.
Michael J. FoxVia Getty ImagesJohn TravoltaVia Getty ImagesWill FerrellVia Getty Images
Michael J. Fox and John Travolta both dropped out of high school. Will Ferrell has a college degree in sports broadcasting from USC.
Tiger WoodsVia Getty ImagesMichael JordanVia Getty ImagesShaqVia Getty Images
Michael Jordan left college in 1984 to join the NBA. He returned in 1986 to complete his degree in geography. Shaq has a degree in general studies with a minor in political science from LSU. Tiger Woods dropped out of Stanford to pursue his golf career.
James CameronVia Getty ImagesReba McEntireVia Getty ImagesSean PennVia Getty Images
James Cameron dropped out of Fullerton College where he was studying physics and became a truck driver. Reba has a degree in elementary education from Southeastern Oklahoma State University. Sean Penn studied auto mechanics at Santa Monica College but later dropped out.