Port Hudson National Cemetery is a United States National Cemetery located in Port Hudson, 20 miles (32 km) north of the city of Baton Rouge in East Baton Rouge Parish, Louisiana.

Administered by the United States Department of Veterans Affairs, it encompasses 19.9 acres (8.1 ha), and as of the end of 2020, had over 12,000 interments.

The cemetery is located on the site which was the main battleground of the Siege of Port Hudson, during the American Civil War.

The battle was notable for valiant fighting by the 1st and 3rd Regiments of the Louisiana Native Guards, troops composed of free men of color from the New Orleans area and a majority of African Americans who had escaped from slavery to join the cause and gain freedom.

[3][4] Port Hudson National Cemetery 19.9 acres (8.1 ha) area, comprising a total of 9 contributing resources, was listed on the National Register of Historic Places on May 20, 1999;[1] a different portion of the battlefield, several miles to the north, is preserved in the Port Hudson State Historic Site.