The answer to this is no, however, if you and your fiance have cohabited for at least a year you can sponsor that person as a common law partner.
A fiance relationship will not independently qualify you for sponsorship. This being said, many couples in such relationships already qualify for Canadian immigration under another eligible category, such as common-law partner sponsorship. Couples that are intended, engaged, betrothed, or affianced to be married, but are not considered common-law according to Canadian immigration law, may need to wait until they are officially married in order to be eligible for Canadian spousal sponsorship.