Hello how may I help you? Who is the tallest person in the world? Do you mean alive today or who ever lived? Who is alive today. Sultan kosen is 8 ft 3 in tall Thanks for that information. Would you like to hear more about him? Sure I would like to. He is from Mardin turkey. He is 35 years old. his wife is 5 ft 9 in tall Very interesting information, thank you. You're welcome is there anything else?