Guy Robert Thibault is a retired Canadian Army officer.

[1] He became Base Commander, CFB Kingston in 2002 before deploying with the International Security Assistance Force in Afghanistan in 2004.

[1] He went on to be Commander of Land Force Central Area in 2005, Assistant Chief of the Land Staff in 2007 and Chief of Staff (Information Management) in 2009.

[1] After that he became Chairman of the Inter-American Defense Board in June 2011 and Vice Chief of the Defence Staff in September 2013.

[3] On 19 January 2016, it was announced that Lieutenant-General Thibault would retire and be replaced in his position by Vice-Admiral Mark Norman.