Who is the tallest man of record?

According to Guinness, the tallest man in medical history for which there is irrefutable evidence in Robert Pershing Wadlow. He was born at Alton, Illinois, US, on February 22, 1918. When he was last measured, on June 27, 1940, he was 2.72 m (8 ft 11.1 in) tall. He died at 1:30am on July 15, 1940 in Manistee, Michigan. His shoe size was 37AA (47 cm or 18.5 in long).