Oleg Yesayan

{{Use dmy dates|date=September 2023}}

{{Short description|Armenian politician and diplomat}}

{{Infobox officeholder

| name = Oleg Yesayan

| native_name = {{nobold|Օլեգ Եսայան}}

| image = Dmitry_Medvedev_with_Oleg_Yesayan_(cropped).jpg

| imagesize =

| alt =

| caption = Yesayan in 2022

| office = Prime Minister of Nagorno-Karabakh

| term_start = 8 January 1992

| term_end = August 1992

| president = Artur Mkrtchian {{small|(Acting)}}
Georgy Petrosyan {{small|(Acting)}}

| predecessor = position established

| successor = Robert Kocharyan

| office1 = President of the National Assembly of Nagorno-Karabakh

| term_start1 = 2 December 1997

| term_end1 = 1 July 2005

| president1 = Arkadi Ghukasyan

| predecessor1 = Arthur Tovmasian

| successor1 = Ashot Ghulian

| office2 = Chairman of the Securities Commission of Armenia

| term_start2 = 2005

| term_end2 = 2006

| president2 = Serzh Sargsyan

| predecessor2 =

| successor2 =

| birth_date = {{Birth date|df=yes|1946|11|12}}

| birth_place = Sos, Nagorno-Karabakh, Azerbaijan SSR, Soviet Union

| death_date =

| death_place =

| restingplace =

| party = Independent

| relations =

| alma_mater = Yerevan State University

| occupation = Economist

| profession =

| signature =

}}

Oleg Yesayan ({{langx|hy|Օլեգ Եսայան}}; born 12 November 1946) is an Armenian politician and diplomat who is a former Prime Minister of Nagorno-Karabakh, President of the National Assembly of Nagorno-Karabakh, and Chairman of the Securities Commission of Armenia. Yesayan is also a former Ambassador of Armenia to Russia and Belarus, presenting his credentials to Russian President Dmitry Medvedev on 5 February 2010.{{Cite web |url=http://eng.kremlin.ru/text/news/2010/02/224152.shtml |title=Archived copy |access-date=16 March 2010 |archive-date=21 July 2011 |archive-url=https://web.archive.org/web/20110721084021/http://eng.kremlin.ru/text/news/2010/02/224152.shtml |url-status=dead }}{{cite news|url=http://news.am/eng/news/12852.html|title=Baku enraged at Oleg Yesayan's appointment|date=25 January 2010|publisher=News.am|accessdate=30 April 2010|archive-date=9 August 2011|archive-url=https://web.archive.org/web/20110809201857/http://news.am/eng/news/12852.html|url-status=live}}{{cite news| url =http://www.umd.umich.edu/685098/| archive-url =https://web.archive.org/web/20100620200025/http://www.umd.umich.edu/685098/| archive-date =June 20, 2010| title =Nagorno-Karabagh| publisher =University of Michigan-Dearborn| date =2013| accessdate =2013-10-20| url-status =dead| quote =On January 8, 1992, Artur Mkrtchian was elected President and Oleg Yessaian as Prime Minister of Karabagh by Karabagh's Parliament.}}