Hello how may I help you? Can you tell me who the tallest person is in the world. ? Do you mean the tallest living person or the tallest of all time? Let's do currently alive. Sultan Kosen is the tallest man at 8'3". Wow, he's tall. Yes he is. Who is the tallest female? Yao Defen is 7'8". Thanks for the information. Have a good day!