Mediation, as used in law, is a form of alternative dispute resolution, a way of resolving disputes between two or more parties with concrete effects. Typically, a third party, the mediator, assists the parties to negotiate a settlement. Disputants may mediate disputes in a variety of domains, such as commercial, legal, diplomatic, workplace, community and family matters.

The term "mediation" broadly refers to any instance in which a third party helps others reach agreement. More specifically, mediation has a structure, timetable and dynamics that "ordinary" negotiation lacks. The process is private and confidential, possibly enforced by law. Participation is typically voluntary. The mediator acts as a neutral third party and facilitates rather than directs the process.

Mediators use various techniques to open, or improve, dialogue and empathy between disputants, aiming to help the parties reach an agreement. Much depends on the mediator's skill and training. As the practice gained popularity, training programs, certifications and licensing followed, producing trained, professional mediators committed to the discipline.