Preiss, John Jr.
- Township: Embro & West Zorra
- Branch: 1st Depot Battalion, W.O.R.
- Regiment number: 3137895
- Date of birth: September 12, 1890
- Where born: South Easthope Township, Perth County, Ontario, Canada
- Wars Served: World War I
- Years of service: June 10, 1918 -
- Country enlisted with: Canada
John Preiss was born Sept. 12, 1890, in South Easthope Township, but at the time of his enlistment, on June 10, 1918, he was a Lutheran and an unmarried farmer living on Lot 32, Concession 6, which since 1902 had been owned by his father.