Leonid Sergeyevich Chigin (Russian: Леонид Сергеевич Чигин; 11 August 1914 – 19 July 1943) was a Red Army colonel and a posthumous Hero of the Soviet Union.

After graduating from the school, Chigin became a platoon commander in the Separate Reconnaissance Battalion of the 51st Rifle Division, stationed in the Ukrainian Military District, in November 1934.

Upon his graduation, Chigin was appointed chief of the 1st (operational) section of the staff of the 125th Tank Regiment of the 202nd Motorized Division of the Baltic Special Military District in May 1941.

[1] With his unit, Chigin fought in the Border Battles on the Northwestern Front, and within two months he became a battalion commander in the regiment, fighting in the area of Pskov and Staraya Russa.

Serving as assistant chief of a section of the operations department of the staff of the 27th Army from October, he was wounded in the area of Demyansk on the 28th of that month, and fought in the Toropets–Kholm Offensive from January 1942.

For [his] bravery and courageous leadership displayed in battle against the German invaders, Comrade Chigin [is] worthy of the award of the title Hero of the Soviet Union posthumously.