The 1st Caucasus Army Corps (Russian, 1-й Кавказский армейский корпус) was a military formation of the Russian Empire which existed between 1847 and 1918, including the period during World War I.

The total number of corps varied from five in 1810 to twenty in 1825 (including eight separate corps: Guard, Grenadier, Caucasus, Finnish, Lithuanian, Orenburg, Siberian, and internal guard).

Army and cavalry corps were abolished from 1862 to 1864 during the military reforms of Dmitry Milyutin.

However, advantages in combat readiness of corps organization led to their reconstruction from 1874 to 1879.

On March 22, 1899 by the highest order the 20th and 39th infantry divisions, the 1st and 2nd Caucasus Cossack divisions, the 1st and 2nd Kuban Plastun battalions, the 20th and 39th artillery brigades, the 2nd and 5th Cossack batteries, the 20th and 39th flying artillery parks were allocated from the Caucasus army corps.