Hello how may I help you? Hello, I have a world record question What is your question? Who is the tallest person in the world? Do you mean who is the tallest person of all time or who is the tallest living person? The tallest person of all time i mean Robert Pershing Wadlow. And who is the tallest living person? Sultan Kosen. Okay, thanks for the information! Is there anything else I could assist you with?