Clarence P. Oakes (June 17, 1900–November 15, 1973) was an American politician who served in the Kansas House of Representatives and Kansas State Senate.
Oakes was born in Merwin, Missouri and his family moved to Kansas when he was five years old.
He resigned his seat in November 1950, and was replaced by Richard L. Becker.
In addition to his time in the state legislature, Oakes served in the U.S. navy, working in military intelligence, and in the U.S. State Department and Central Intelligence Agency.
In 1961, he was selected to head the Institute for American Strategy, a defense policy think tank.