Harrison Freeman Matthews (May 26, 1899 – October 19, 1986) was an American career diplomat who served as Ambassador to three European countries.

[1] He served in the United States Navy during World War I, and received bachelor's (1921) and master's (1922) degrees from Princeton University.

[13][14] During the Yalta Conference he and Harry Hopkins convinced President Franklin D. Roosevelt to accede to Winston Churchill's and Anthony Eden's demands that France be given a seat on the Allied Control Council alongside the US, the USSR, and the UK.

[18] He was acting Secretary of State for the one day between the departure of Dean Acheson and the swearing in of John Foster Dulles.

[19] In 1953, Matthews was appointed to succeed Selden Chapin as Ambassador to the Netherlands, and he remained in this post until 1957 when he was replaced by Philip Young.