Duncan Farrar Kenner (February 11, 1813 – July 3, 1887) was an American politician who served as a Deputy from Louisiana to the Provisional Congress of the Confederate States from 1861 to 1862.

According to Ulrich Bonnell Phillips, he was "long a slave trader with headquarters at New Orleans before he became a planter in Ascension Parish on a rapidly increasing scale.

He used scientific techniques and was said to be the first man in Louisiana to use a railroad to bring sugar cane from the fields to the mill.

[1] He served for several terms in the Louisiana House of Representatives and was a member of the state constitutional conventions of 1845 and 1852, having presided over the latter conclave.

During the American Civil War of 1861–1865, he was a member of the Confederate Congress and chairman of its Ways and Means Committee.

[1] Davis, through Kenner, offered the emancipation of the Confederate slaves in exchange for diplomatic recognition of the Confederacy by Britain and France.