Hello how may I help you? Who is the tallest person in the world? Are you looking for the tallest living person, or the tallest person that has ever lived? Who is currently the tallest person? The tallest person currently living is Sultan Ksen. How tall is he? He is 8 ft 2.8 in tall. Who is the tallest person in history? The tallest person that ever lived was Robert Pershing Wadlow. How tall was he? He was 8 ft 11.1 in tall. Okay thanks You're welcome.