Marion Bethune (* April 8, 1816 in Greensboro, Greene County, Georgia, † February 10, 1895 in Talbotton, Georgia ) was an American politician. Between 1870 and 1871 he represented the state of Georgia in the U.S. House of Representatives.
Marion Bethune enjoyed a private school and then visited the De Hagan's Academy. In 1829 he came with his widowed mother to Talbotton, where he was engaged in trade. After studying law and its made in 1842 admitted to the bar he began in Talbotton to work in his new profession. Between 1852 and 1868 he worked at the Talbot County estate as judges. Politically Bethune was active until after the Civil War as a member of the Republican Party. He was a member of the Assembly to revise the constitution of Georgia, on which the resignation was withdrawn from the Union in 1861. Between 1867 and 1871 Bethune sat as an MP in the House of Representatives from Georgia.
After the re-elected in 1868, Congressman William P. Edwards was denied his seat in Congress, Bethune was at the due election for the third seat of Georgia as his successor in the U.S. House of Representatives in Washington DC selected. There he joined on 22 December 1870 its new mandate. Since he has not been confirmed at the regular elections of 1870, he could only finish the current legislative periods in Congress until March 3, 1871.
In 1872, Bethune ran again unsuccessfully for the U.S. House of Representatives. Otherwise, he practiced as a lawyer again. In 1890 he led the oversight of the United States Census. He died on February 20, 1895 in his home town of Talbotton and was also buried there.