Payments Canada, which regulates the process of clearing and settling financial transactions in Canada, has no official stance on whether the name on a cheque has to match the name of the account holder who is depositing the cheque. This is up to each financial institution's individual policies.
Most banks will accept cheques made out to your maiden name as long as you can prove that you're the same person. You'll need identification such as a driver's license or a passport and probably your marriage certificate as well.