Lieutenant General Jean-Marc Lanthier, CMM, MSM, CD is a retired Canadian Army officer who served as Commander of the Canadian Army from July 2018 to July 2019.

He was Vice Chief of the Defence Staff from July 2019 to his announcement of retiring in March 2020.

[1] Lanthier was commissioned as an armoured officer in the Canadian Armed Forces in 1989[2] and after graduating from the University of Ottawa.

[2] After that he became Deputy Commanding General Sustainment I Corps, a unit of the United States Army, in June 2011, Commander of 2nd Canadian Division in July 2013, and Commander Canadian Army Doctrine and Training Centre in July 2014, before becoming Chief of Programme in April 2017.

[4][5] A year later, on 18 July 2019, he succeeded Lieutenant General Paul Wynnyk as Vice Chief of the Defence Staff.