There have been 8 Secretary Generals of the United Nations. From the 1st of February, 1946 to the 10th of November, 1952, the first Secretary General was Trygve Lie, of Norway. From the 10th of...
Ban Ki-moon is the current Secretary-General of the United Nations.
Links are provided below to the Wikipedia post on the U.N. (where you will find the name of the current Secretary-General - even...