What is the person called who resolves disputes in a binding manner between a buyer and seller?

An arbitrator is a neutral third party who is appointed to resolve disputes between two parties, in this case, a buyer and a seller. The role of the arbitrator is to listen to both sides, review the evidence presented, and make a decision that is binding on both parties. This process is often more formal than mediation and can save time and resources compared to litigation. Arbitration is generally recognized by law and can enforce an agreement between the parties involved.

The other terms serve different functions: a middleman typically refers to someone who facilitates transactions between buyers and sellers rather than resolving disputes. A trustee manages assets or property for the benefit of another person or group, often in fiduciary situations. An executor is responsible for administering the estate of a deceased person, ensuring that their wishes are carried out per legal requirements. Each of these roles has specific responsibilities, but they do not pertain to resolving disputes in a binding manner like an arbitrator does.