Fort Smith National Cemetery is a United States National Cemetery located at Garland Avenue and Sixth Street in Fort Smith, Sebastian County, Arkansas.

In 1838, a new fort was constructed on the site, including an officer's quarters where General Zachary Taylor lived from 1841 until 1845.

On April 23, 1861, as the American Civil War was beginning, the post was abandoned by the U.S. Army forces stationed there; it was then subsequently occupied by a Confederate garrison.

During this occupation, nearly 400 Confederate soldiers died and were buried at the fort's cemetery.

The cemetery includes more than 1,400 unmarked graves, many of them of Union and Confederate soldiers.