Haitian Kingpin Nicknamed Baby Doc (1971 to 1986)
While he wasn't exactly a child when he came into power, Jean-Claude Duvalier of Haiti was just 19-years-old when he was declared President of Haiti.
Baby Doc came into power after his father named him as successor and made certain amendments to the constitution that allowed him to be the President for the rest of his life. Many believed his reign won't last long as Haiti was already in a miserable state, but he succeeded to rule the country for about 15 years.
