128th Regiment may refer to:
128th Field Artillery Regiment 128th Infantry Regiment (United States) 128th Light Anti-Aircraft Regiment, Royal Artillery 128th Pioneers 128th Regiment of Foot
American Civil War regiments 128th Illinois Infantry Regiment 128th Indiana Infantry Regiment 128th New York Infantry Regiment 128th Ohio Infantry Regiment 128th Pennsylvania Infantry Regiment 128th United States Colored Infantry Regiment
See also 128th Brigade (disambiguation) 128th (disambiguation)