United States
Robert Wadlow (United States) 8'11.1" (272.03 cm), Tallest human ever.
John William Rogan (United States) 8'8" (264.16 cm), Tallest African American ever.
John F. Carroll (United States) 8'7.75" (263.53 cm).
Don Koehler (United States) 8'2" (248.92 cm).
Bernard Coyne (United States) 8'2" (248.92 cm).
Cecil Boling (United States) 7'8.52" (235 cm).