The Blue Division officially designated as División Española de Voluntarios by the Spanish Army and 250. Infanterie-Division in the German Army was a unit of Spanish volunteers and conscripts who served in the German Army on the Eastern Front of the Second World War. It also included 1,000 men of the Portuguese Legion sent by the Portuguese Estado Novo under the Spanish Flag, many of whom had already fought in the Viriatos during the Spanish Civil War.

Blue Division casualties in all of the Russo-German conflict totaled 22,700 (3,934 battle deaths, 570 disease deaths, 326 missing or captured, 8,466 wounded, 7,800 sick, and 1,600 frostbitten).