Ioan Popovici (16 August 1857 – 6 August 1956) was a Romanian general and commander of the Romanian 1st Army Corps from 1916 to 1918 during World War I.

Born in Galați, he attended the Școala Militară de Infanterie și Cavalerie [ro] (Military Infantry and Cavalry School) in Bucharest from 1879 to 1881.

Afterward he rose through the ranks until he became a divisional general in 1916 as World War I was raging, engulfing Romania.

The 1st Corps comprised the 13th Division (under the command of Ioan Oprescu [ro] and after 10 September of Gheorghe Sănătescu [ro]), the 23rd Division (Matei Castriș), and the 1st Călărași Brigade (Oprescu).

The loss suffered by his command a few days later at the Battle of Sibiu led to his forced retirement.[3]: p.