Alexander Nevsky (Russian: Александр Невский) is the score composed by Sergei Prokofiev for Sergei Eisenstein's 1938 film Alexander Nevsky. The subject of the film is the 13th century incursion of the knights of the Livonian Order into the territory of the Novgorod Republic, their capture of the city of Pskov, the summoning of Prince Alexander Nevsky to the defense of Rus', and his subsequent victory over the crusaders in 1242. The majority of the score's song texts were written by the poet Vladimir Lugovskoy.
In 1939, Prokofiev arranged the music of the film score as the cantata Alexander Nevsky, Op. 78, for contralto (often sung by mezzo-sopranos but not in fact in that range), chorus and orchestra. It is one of the few examples (Lieutenant Kijé is another) of film music that has found a permanent place in the standard repertoire, and has also remained one of the most renowned cantatas of the 20th century.
Eisenstein, Prokofiev, and Lugovskoy later collaborated again on another historical epic, Ivan the Terrible Part 1 (1944) and Part 2 (1946, Eisenstein's last film).