Frank Probasco Bohn (July 14, 1866–June 1, 1944) was a politician from the U.S. state of Michigan.

Bohn was born in Charlottesville, Indiana , in Hancock County, where he attended public high school. He attended Danville Normal College in Danville, Indiana, and graduated from the Medical College of Indiana , Indianapolis in 1890. Bohn ran unnsuccessfully as a Democrat for the Michigan State House of Representatives from Delta District in 1896. He worked as a banker and was village president of Newberry, Michigan, 1904-1919, and a member of the Newberry School Board, 1908-1914. He was an unsuccessful candidate in the Republican primary election for Lieutenant Governor of Michigan in 1916. He was a member of the Michigan State Senate from the 30th District, 1923-1926.

Bohn defeated incumbent Republican Frank D. Scott in the primary elections in 1926. He then won the general election to the United States House of Representatives from Michigan's 11th District for the Seventieth and the two succeeding Congresses, serving from March 4, 1927 to March 3, 1933. He was an unsuccessful candidate for reelection to the Seventy-third Congress in 1932. After leaving Congress, he was a member of the Michigan State Hospital Commission, 1935-1937. Bohn died in Newberry and is interred in Forest Home Cemetery there.