A Mutual Nondisclosure Agreement (MNA) is an agreement between two parties to protect confidential information from being shared with third parties. It is a legally binding contract that obligates both parties to protect the confidential information that is shared between them. The types of Mutual Nondisclosure Agreement include Unilateral Nondisclosure Agreement, Bilateral Nondisclosure Agreement, and Multilateral Nondisclosure Agreement. Unilateral Nondisclosure Agreement is when one party agrees to keep confidential information private. Bilateral Nondisclosure Agreement is when two parties agree to keep confidential information private. Multilateral Nondisclosure Agreement is when more than two parties agree to keep confidential information private. MNA's typically outline the confidential information to be shared, the parties involved in the agreement, the duration of the agreement, and the repercussions of breaking the agreement. The agreement is designed to protect confidential information, such as trade secrets, ideas, inventions, and other proprietary information.