For the purposes of most Provincial Hunting Regulations, crossbows (including bows) are considered to be firearms, but only when it comes to hunting activity. If you plan to use a bow to hunt, please check provincial hunting regulations for information on hunting licence requirements and restrictions that may apply to the use of bows. For example, some provinces do not allow crossbows for hunting.
Crossbows that can be aimed and fired with one hand and crossbows with an overall length of 500 mm (about 19.68 inches) or less are prohibited. You cannot lawfully possess or acquire a prohibited crossbow.
Other than that, you do not need a valid licence or registration certificate to possess any other type of bow, including a crossbow that is longer than 500 mm and that requires the use of both hands. Criminal Code provisions making it an offence to acquire a crossbow without a valid licence were never brought into force.