SMS Baden was a Bayern-class dreadnought battleship of the German Imperial Navy built during World War I. Launched in October 1915 and completed in March 1917, she was the last battleship completed for use in the war; two of her sisters—Sachsen and Württemberg—were incomplete when the war ended. The ship mounted eight guns in four twin turrets, displaced at full combat load, and had a top speed of . Along with her sister Bayern, Baden was the largest and most powerfully armed battleship built by the Imperial Navy.