John F. Carroll

John Francis Carroll (1932 – August 8, 1969) was an American giant and one of 29 known people in medical history to have verifiably reached a height of or more. He suffered from severe, 2-dimensional spinal curvature (kyphoscoliosis) and acromegalic gigantism. He had a standing height of on October 14, 1959, at age 27, but according to calculations, his height would have been , assuming normal curvature of the spine. In 1968, he was later measured at , having shrunk in stature due to his worsening spinal condition.

Carroll was born in Buffalo, New York, and was known as the Buffalo Giant in medical literature. He was third in stature only to Robert Wadlow and John Rogan. His extraordinary growth started at the age of 16. During his early life, his growth continued despite extensive treatments. At one point he grew in height in one year. As his condition worsened, his standing height decreased.

He died on August 8, 1969, and was buried in Holy Cross Cemetery in Lackawanna, New York.