World's oldest person to be appointed PM was Morarji Desai
Former Prime Minister of India Morarji Ranchhodji Desai is known to be the 'oldest appointed Prime Minister' at the time of first appointment, according to the Guinness World Records. Desai, who was 81 years old when he was appointed in March 1977, served as the Prime Minister until July 1979. Notably, Morarji Desai's 22nd death anniversary was observed on Monday.