Hello how may I help you? Who is the oldest person of all time I can answer that for you. The oldest person of all time is Jeanne Clament. is she still alive?\ No, she passed away in 1997 at the age of 122 years. ohw thats sad. thank you for your information No problem. Would you like to know anything else? nothing else . thank you so mucn. Remember that I am here to help you with any world record information requests. Have a good day . Thanks. You as well!