The 18th Georgia Volunteer Infantry was an infantry regiment in the Confederate States Army during the American Civil War. Originally brigaded with the three Texas regiments of John Bell Hood's Texas Brigade, it was transferred to Thomas R.R. Cobb's Georgia Brigade after the Battle of Antietam in late 1862. After General Cobb was mortally wounded at Battle of Fredericksburg, the original colonel of the 18th Georgia, William T. Wofford, became Brigadier General of the Georgia Brigade.