Arshak Ter-Gukasov (; 1819 – 8 January 1881) was a Lieutenant-General of the Russian Empire. Born to an Armenian family in Tiflis, he started his military career in 1850 and was subsequently involved in the war in the Caucasus. After being promoted to the rank of lieutenant general, and serving various governmental posts, he was then assigned as the Yerevan Forces commander of Russia's army during the Russo-Turkish War of 1877–1878. Owing to his successes in battle, Arshak Ter-Gukasov was awarded medals by Imperial Russia and other foreign powers.