Hello how may I help you? Can you tell me who the tallest person in the world is? Do you mean the tallest living person or the tallest person of all time? of all time I understand. One moment while I find that information in our repository. The tallest person of all time was Jim Bob Smith from Vancouver. He was 9 ft, 4 inches tall. thank you You are welcome. Anything else? who is the tallest living person The tallest living person is Sue Mary Smith, Kim Bob's daughter. She is 9 feet, 3 inches tall. That should read Jim Bob's daughter. My mistake. thank you You are welcome.