The First Secretary of the Nagorno–Karabakh regional branch of the Communist Party of the Soviet Union was the position of highest authority in the Nagorno-Karabakh AO in the Azerbaijan SSR of the Soviet Union. The position was created in July 1923, and abolished on August 27, 1990. The First Secretary was a de facto appointed position usually by the Politburo or the General Secretary himself.
References
First Secretary of the Nagorno–Karabakh Communist Party Wikipedia(Text) CC BY-SA