Henry Styles Bridges (September 9 1898–November 26 1961) was an American politician from New Hampshire. He was a member of the Republican Party.

Bridges was born in West Pembroke, Washington County, Maine . He attended the public schools in Maine and graduated from the University of Maine at Orono in 1918. From 1918 he held a variety of jobs, including teaching, newspaper editing, business and state government. He was an instructor at Sanderson Academy , Ashfield, Massachusetts from 1918 to 1919. He was a member of the extension staff of the University of New Hampshire at Durham from 1921 until 1922. He was the secretary of the New Hampshire Farm Bureau Federation from 1922 until 1923, and the editor of the Granite Monthly Magazine from 1924 until 1926. Meanwhile, He was the director and secretary of the New Hampshire Investment Corporation from 1924 until 1929. He was then a member of the New Hampshire Public Service Commission from 1930 until 1934. Bridges ran for the position of governor of New Hampshire in 1934, and won. He served in that position for one two-year term, from 1935 until 1937. He was elected as a Republican to the United States Senate in 1936. In 1937 he retired from the Army Reserve Corps, in which he had served as a Lieutenant since 1925.

Bridges was reelected to four subsequent six-year terms in 1942, 1948, 1954, and again in 1960, although he did not complete his final term due to his death. He became one of the highest-ranking Republican senators, serving as chairman of the Joint Committee on Foreign Economic Cooperation when the Republicans had control of the Senate from 1947 until 1949, Senate Minority Leader from 1952 until 1953, President Pro Tempore of the United States Senate when the Republicans had control of it from 1953 until 1955, chairman of the Joint Committee on Inaugural Arrangements for both of the inaugurations of President Dwight Eisenhower, Chairman of the Committee on Appropriations when the Republicans had control of the Senate from 1947-1949 and 1953-1955, and Chairman of the Republican Policy Committee from 1954 until his death. Bridges died in East Concord, New Hampshire , and was burried in Pine Grove Cemetery.