A Mutual Nondisclosure Agreement (NDA) is a legally binding contract that establishes a confidential relationship between two parties, usually a business and an individual. The agreement is designed to protect the confidential information of both parties by restricting the use and disclosure of such information. The agreement is often used when two companies or individuals are considering doing business together and need to share confidential information with each other to evaluate the potential business relationship. There are two types of Mutual Nondisclosure Agreement: Unilateral and Mutual. A Unilateral NDA is an agreement between one party and another in which only one party is legally bound to protect the confidential information of the other. A Mutual NDA is an agreement between two parties in which both parties are legally bound to protect each other's confidential information.