Hello how may I help you? I'd like some information on who the tallest person is Would you like to know the tallest living person? Or the tallest person that ever lived? Just who the tallest person living is The tallest living person is Robert Wadlow, measuring at 8 ft 11 in. Where does he live? Robert Wadlow currently lives in the United States. Oh cool! That's neat to know Is there anything else you would like to know? No, that's it for now! Thanks for your answers! You're welcome.