The Gary Cook Cup is the Senior "AAA" championship of Hockey Northwestern Ontario. The trophy was first awarded in 2008. The winner generally moves on to the Renwick Cup.
Championships
- 2008 Thunder Bay Hawks
- 2009 Thunder Bay K&A Twins
- 2010 Kenora Thistles
- 2011 Fort Frances Thunderhawks
- 2012 Kenora Thistles (by default)
- 2013 Kenora Thistles (by default)
- 2014 Kenora Thistles (by default)
- 2015 Kenora Thistles (by default)
- 2016 no teams in the region
- 2017 no teams in the region
- 2018 no teams in the region
- 2019 no teams in the region
- 2020 no teams in the region
