There are no federal or provincial laws regulating parental alienation in Canada. That being said, some courts recognize parental alienation as a serious issue with potential long-term effects and serious harm for the child. If a court believes that a party is alienating a child from their parent without due cause, they can take measures to place the child in the alienated parent’s care. A parent who is actively alienating a child may lose custody and or access.
If you believe that the other party is alienating your child from you it is important to see a lawyer immediately to get advice crafted to your particular situation.
Divorcing parents could lose custody of their children for parental alienation if they try to turn the children against a parent.