5: Christopher Michael Langan – 195

Christopher is described as one of the smartest man in America. Langan started talking at an age of just six months and taught himself how to read at a phenomenal age of three. He also scored a perfect SAT score. He dropped from Montana University saying that he was smarter than his teachers. The man is certainly a figure of confidence. Langan developed the CTMU also known as the “Cognitive-Theoretic Model of the Universe”. Christopher stands at 5th spot with a high IQ level of 195.