Edward Thompson Wailes (February 16, 1903 – June 25, 1969) was a United States diplomat.
Edward T. Wailes was born in Brooklyn on February 16, 1903. He was educated at Princeton University, receiving a B.A. in 1925 and Columbia Law School, graduating in 1927.
Wailes then joined the United States Foreign Service. As a Foreign Service Officer, he alternated between field appointments and desk jobs at the United States Department of State in Washington, D.C. Overseas, he was posted in Nanking 1930-33; in Brussels 1936-39; in Ottawa 1942; and in London 1943-45. He married Cornelia Lyon on December 30, 1933.
In 1945, he served as Special Assistant to the Director of the State Department's Office of European Affairs, and then as chief of the Division of British Commonwealth Affairs 1945-48. He became a Foreign Service Inspector in 1948, and Chief Inspector of the Foreign Service Inspection Corps in 1951.
In 1953, President of the United States Harry Truman nominated Wailes as Assistant Secretary of State for Administration and, after Senate confirmation, he held this post from May 29, 1953 until June 22, 1954.
President Dwight Eisenhower named Wailes United States Ambassador to South Africa on September 15, 1954, with Ambassador Wailes presenting his credentials on November 29, 1954 and holding that post until August 11, 1956.