Douglas 'Pete' Peterson (born June 26, 1935) was a US Air Force pilot who spent over six years as a prisoner of the North Vietnamese after being shot down. He returned to Hanoi in 1997 as the first U.S. ambassador to the Socialist Republic of Vietnam, with the goal of securing an accounting of those still listed as missing in action from the war. He was ambassador until 2001. He had previously served three terms as a Congressman from the 2nd District of Florida.

He should not be confused with former U.S. Commerce Secretary Peter G. Peterson who was a founding member of the Concord Coalition.