The person who commits a tort is called a tortfeasor.

A person who commits a tort either intentionally or through negligence is called a tortfeasor or wrongdoer. The victim of the tort is now commonly known as the claimant but prior to 1999 would have been referred to as the plaintiff, on the other side will be the defendant who is usually the tortfeasor or person who has done wrong.

In the case of vicarious liability, the defendant will be an employer who is seen to be held vicariously liable for the wrongdoings of his employee, the tortfeasor.