The Environment and Conservation Department says it's aware of 15 cases out of 103,000 mailings where people received big game licence applications of other individuals, along with their own.
The applications include the recipient's name, address, driver's licence number, and log-in and password information for the Wildlife Information Management System.
The government says there have also been two reports of recipients receiving applications in unsealed envelopes.
Environment Minister Dan Crummell says the province is working with a third-party vendor that was responsible for mailing the applications to determine what happened.
The department has notified those people whose applications were affected and given them the opportunity to request a new driver’s licence number at no charge.