Lake, Washington Kester
- Township: East Nissouri
- Rank: Quarter-Master Sergeant
- Branch: 75th Battalion; 3rd Battalion
- Regiment number: 138769
- Wars Served: World War I
- Country enlisted with: Canada
Washington Kester Lake was the son of Adeline (Kester) and John Lake of Thamesford, Ontario. He served with the 75th Battalion and then the 3rd Battalion. He was at the front for three years and four months and was in charge of the machine gun section.