| Alfred Washburn Benson | |
| Office: | Justice of the Kansas Supreme Court |
| Term Start: | 1907 |
| Term End: | 1915 |
| Jr/Sr1: | United States Senator |
| State1: | Kansas |
| Term Start1: | June 11, 1906 |
| Term End1: | January 23, 1907 |
| Appointer1: | Edward W. Hoch |
| Predecessor1: | Joseph R. Burton |
| Successor1: | Charles Curtis |
| Office2: | Member of the Kansas Senate |
| Term Start2: | 1881 |
| Term End2: | 1885 |
| Birth Date: | 15 July 1843 |
| Birth Place: | Poland, U.S. |
| Death Place: | Topeka, Kansas, U.S. |
| Party: | Republican |
Alfred Washburn Benson, also known as Albert Washburn Benson (July 15, 1843January 1, 1916) was an American attorney, politician, and jurist who served as a United States senator from Kansas.
Born in Poland, Chautauqua County, New York, Benon moved to Jamestown, New York, in 1860, and attended Jamestown and Randolph Academies.
During the Civil War, he enlisted in 1862 as a private in the 154th New York Infantry Regiment, and at the close of the war held a commission as major.
He studied law, and was admitted to the bar in Buffalo, New York, in 1866 and commenced practice in Sherman, New York. He moved to Ottawa, Kansas, in 1869, held various local offices, and was a member of the Kansas Senate from 1881 to 1885.
He was a judge of the fourth judicial district of Kansas from 1885 to 1897, and was appointed as a Republican to the U.S. Senate to fill the vacancy caused by the resignation of Joseph R. Burton; he served from June 11, 1906, to January 23, 1907, when a successor was elected.
He was an unsuccessful candidate for election in 1907 to fill this vacancy, and was appointed and subsequently elected justice of the Kansas Supreme Court, on which he served from 1907 to 1915, when he resigned.
He retired from public life and died in Topeka in 1916, aged 72. Interment was in Highland Cemetery, Ottawa, Kansas.