Ioan Dumitrache (25 August 1889 – 6 March 1977) was a Romanian major general during World War II, in command of the 2nd Mountain Division.

Between February 1938 and March 1939 he also served as prefect of Năsăud County, being appointed to this position by Prime Minister Miron Cristea.

After Northern Transylvania was ceded to Hungary in the wake of the Second Vienna Award, his unit withdrew to the Alba Iulia–Hațeg area, with the command post in Deva.

Together with the 8th Cavalry Division, it forced the Prut River and liberated the Herța region; by 9 July, the entire northern part of Bukovina was under control of the Romanian Army.

[3] On 19 July, the 2nd Mountain Brigade crossed the Dniester and advanced towards the Bug River, fighting with the rear echelons of the Soviet 18th Army.

[3] The Battle of Nalchik ended as one of the biggest Romanian victories on the Eastern Front, with the capture of 3,079 prisoners and a large amount of weaponry and war materiel.

[3] The 2nd Mountain Division continued their offensive towards Alagir and Ordjonikidze, reaching on 15 November about 20 km (12 mi) from the Grozny oil center.

The 2nd Mountain Division arrived at the Taman Peninsula on 28 January 1943; subordinated to the German 52nd Corps from the 17th Army, it established defensive positions in the Kuban bridgehead, on the western bank of the Beysug River.

After several more weeks of fighting, Dumitrache's mountain division was removed from the front line on 20 March, and was sent to the Alma Valley in Crimea for reorganization.

[3] On 10 November, after the 4th Ukrainian Front started its offensive on the North Crimean Canal, Dumitrache took over the command of a Romanian detachment, made up of troops from the 1st and 2nd Mountain, as well as 10th and 19th Infantry Divisions, that contained a Soviet bridgehead south of the Sivash Bay.

During the 4th Ukrainian Front's Crimean Offensive from April 1944, when the Soviet troops broke into Crimea, Dumitrache's division was divided in two: one part at Sevastopol, where it repulsed 24 Soviet attacks between 15 and 30 April 1944, while the other part was sacrificed by the German command in order to allow the retreat of the Axis troops from the Kerch Peninsula.

On 1 August 1944, Dumitrache was appointed to the command of the newly reorganized Mountain Corps that was deployed on the Romanian-Hungarian frontier in Southwestern Transylvania.

[3] The day after King Michael's Coup of 23 August 1944, when Romania switched sides and joined the Allies, the German troops occupied key positions in Brașov.

Cleared of the charges, he returned as commander of the Mountain Corps with the approval of General Ivan Susaikov [ru], the President of the Allied Control Commission in Romania.

[3] In February 1949 he was arrested again by the Communist authorities for presumed war crimes, based on a referral prepared by Securitate General Alexandru Nicolschi.