stakeholder

An individual who has an interest in something, e.g., a corporation, and is affected by decisions and activities regarding that issue.

Individual or organization having a right, share, claim, or interest in a system or in its possession of characteristics that meet their needs and expectations. An individual, group, or organization who may affect, be affected by, or perceive itself to be affected by a decision, activity, or outcome of a project.

any individual, group, or organization that can affect, be affected by, or perceive itself to be affected by a decision or activity

someone entrusted to hold the stakes for two or more persons betting against one another