CSS Oregon was a wooden sidewheel steamer that served as a gunboat in the Confederate States Army during the American Civil War.

In 1861, she was seized by the Governor of Louisiana, Thomas Overton Moore, and served as a blockade runner before being selected for use by the Confederate Army.

[1] As of April 1861, the Geddes family of New Orleans and Cincinnati had a 60 percent ownership stake in the vessel, with the remainder being in the hands of two Mobile residents: R. A. Heirn and Samuel Wolff.

[4] After the outbreak of the American Civil War in April 1861, Governor of Louisiana Thomas Overton Moore had the ship seized.

About 135 sailors and marines were loaded onto Oregon and J. D. Swain, and the two ships left Lake Pontchartrain on July 5 and headed to Bay St. Louis, Mississippi.

[8] On July 13, Oregon and the steamer CSS Arrow attempted to lure the gunboat USS Massachusetts into the range of the Confederate cannon on Ship Island, but the Union vessel remained at a distance.

[16] Pamlico then escorted Oregon back to New Orleans, where the latter unloaded the power mill equipment, which increased the city's capacity for gunpowder production.

[17] On March 25, 1862, Oregon was escorted by Pamlico to the Pass Christian area to deliver supplies and then on her own moved towards Ship Island to scout Union positions.

In an action offshore of Pass Christian, Confederate fire forced Henry Lewis to withdraw,[20] and the other Union vessels suffered light damage.

[22] With Carondelet's wheel also damaged in the battle and the steamer USS Hatteras approaching, the Confederate vessels withdrew to Lake Pontchartrain and the Union forces moved on to Pass Christian.

With Union forces preparing to attack New Orleans, Oregon, Pamlico, Carondelet, Arrow, and the gunboat CSS Bienville remained at Lake Pontchartrian, guarding Chef Menteur Pass and the Rigolets.

[1] The wreck later interfered with the escape of other Confederate vessels from Lake Pontchartrain,[25] and remained there until a contractor for the United States Army Corps of Engineers removed it between 1872 and 1873.