MENSA, Latin for table, is an international society for people with especially high IQs. There are members in over 100 countries who have the opportunity to meet up locally, regionally, or internationally.
To become a member of MENSA, you must score in the top two percent of the population on a properly administered IQ test. Founded in 1946, they have over 110,000 members worldwide, with their youngest member joining at only two years old.
Click through the gallery to see which celebrities are MENSA members. Some of these geniuses may surprise you.
(Photo: National Geographic/Getty Images)