Hajkaz Kostanian

Haykaz Arshaki Kostanyan (, ; 1898 – 21 April 1938) was a Soviet Armenian politician.

Biography Kostanyan was born in to an Armenian family in Tbilisi. From 1916, he was a member of the Bolsheviks. in 1916-1917 he studied at the seminary in Etchmiadzin and in 1917–1918 at the Medical Faculty of the University of Saratov but did not graduate.

From March to October 1917, he was a Bolshevik agitator in Balaxanı near Baku. From 1918, he was secretary of the Office of the Armenian Communist Section of the Saratov Committee of the RCP(b), later secretary of the Saratov Department for Nationalities and deputy head of the Saratov Department of National Education. From January to November 1920 he was chairman of the Foreign Office of the Central Committee of the Communist Party (Bolsheviks) of Armenia. In 1920 he was arrested in Tbilisi by the Georgian government but managed to escaped to Baku. From July 13, 1930, to January 26, 1934, member of the Central Control Commission of the VKP(b). From 1931 to 1934 he was secretary of the Profintern. Later he worked at the People's Commissariat of Communications of the Soviet Union.