Mononym

A mononym is a name composed of only one word. An individual who is known and addressed by a mononym is a mononymous person.

A mononym may be the person's only name, given to them at birth. This was routine in most ancient societies, and remains common in modern societies such as in Afghanistan, Bhutan, Indonesia (especially by the Javanese), Myanmar, Mongolia, Tibet, and South India.

In other cases, a person may select a single name from their polynym or adopt a mononym as a chosen name, pen name, stage name, or regnal name. A popular nickname may effectively become a mononym, in some cases adopted legally. For some historical figures, a mononym is the only name that is still known today.