Alexander Vladimirovich Romanchuk (Russian: Александр Владимирович Романчук; born 15 April 1959) is a colonel general in the Russian Armed Forces serving as the Deputy Commander of the Southern Military District during the 2023 Ukrainian counteroffensive.

Romanchuk was born in Luhansk, then part of the Soviet Union, on 15 April 1959.

He served in various positions in the Russian armed forces, including as Head of the Combined Arms Academy, Commander of the 29th Combined Arms Army, Chief military adviser to the Syrian Arab Army and in his final posting as the Deputy Commander of the Southern Military District.

Romanchuk took much of the credit for Russian defenses during the early stages of the 2023 Ukrainian counteroffensive.

[2][3] Romanchuk claimed the early success in the defense efforts was due mainly to Russian air superiority, military intelligence, and extensive minefields.