Count Alexander Romanovich Bruce (1704–1760) was a lieutenant general in the Imperial Russian army.
In 1736 he fought in the Russo-Turkish War (1735-1739) and was present in Burkhard Christoph von Münnich's Crimean campaign and the battle at the Solyan lake under the command of Lieutenant General Izmailov.
On 9 December 1736 Bruce was promoted to colonel and put in command of the Reval Dragoon Regiment and the following year he was present at the siege of Ochakov.
At the rank of major general he fought in the Russo-Swedish War (1741–43), during which he was sent to Finland as part of generalissimo James Francis Edward Keith's force, staying there until the end of 1742.
His wife died in summer 1745 and in December that year Bruce re-married to Ekaterina Alekseyevna Dolgorukova, another member of the Dolgorukov family and formerly engaged to Peter II of Russia, though she died of a cold shortly after her wedding to Bruce.