Guillaume Cyr is a Canadian actor from Quebec. He is most noted for his performance as Horace Barré in the 2013 film Louis Cyr, for which he won the Jutra Award for Best Supporting Actor at the 16th Jutra Awards in 2014.

• Laurentie (2011)

  
• La Nouvelle Vie de Paul Sneijder (2016)

  
• Louis Cyr (2013)

  
• Jusqu'au déclin (2020)

  
• Nos jours heureux (2006)