Your OUAC reference number is an identification number given to you by The Ontario Universities' Application Centre (OUAC). Your OUAC number is 10 digits long, beginning with the century then followed by 6 numbers (YYYY-NNNNNN). Your OUAC Reference number was given to you when you submitted your online application. If you cannot locate or remember your OUAC reference number, please go back to the OUAC website: www.ouac.on.ca. The OUAC will require verification of your identity before releasing this information.