Grigor Hovhannissian (Armenian: Գրիգոր Յուրիի Հովհաննիսյան, born January 26, 1971) is an Armenian diplomat, who served as Ambassador of Armenia to the United States from 2016 to 2018, and as Ambassador of Armenia to Mexico from 2013 to 2016.

From 2001 to 2003 he served at the Office of the UN Special Coordinator (UNESCO) for the Middle East Peace Process in Jerusalem, which included the United Nations Field Coordinator in the Palestinian territories, the West Bank and the Gaza Strip (Ramallah and Gaza City).

In 2004 he was Senior Advisor to the Deputy Special Representative of the Secretary General at the United Nations Assistance Mission to Iraq (in Jordan), and in 2006 he was Field Coordinator at the UN Emergency Mission to the Saida region of Lebanon.

Hovhannissian was also a visiting Lecturer at Yerervan State University in Middle East Politics at the Faculty of Oriental Studies, and from 2006–2009 served as Executive Director of the "Shushi Revival Fund" in Armenia.

[4] [5] On December 29, 2018 Hovhannissian was appointed deputy Minister of Foreign Affairs of Armenia.