The 55th Army was a field army of the Red Army during World War II. It was part of the Leningrad Front and was formed on 1 September 1941. The army fought in the Sinyavino Offensive, Lyuban Offensive Operation and the Battle of Krasny Bor. On 25 December 1943, it was combined with the 67th Army.

The Leningrad Front was formed during the 1941 German approach on Leningrad by dividing the Northern Front into the Leningrad Front and Karelian Front on August 27, 1941.