The Battle of Königgrätz (German: Schlacht bei Königgrätz), also known as the Battle of Sadowa, Sadová, or Hradec Králové, is the decisive battle of the Austro-Prussian War, in which the Kingdom of Prussia defeats the Austrian Empire.

Taking place near Königgrätz (Hradec Králové) and Sadowa (Sadová) in Bohemia on 3 July 1866, it is an example of battlefield concentration, a convergence of multiple units at the same location to trap and/or destroy an enemy force between them.