A chancellor is a leader of a college or university, usually either the executive or ceremonial head of the university or of a university campus within a university system.
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In most Commonwealth and former Commonwealth nations, the chancellor is usually a ceremonial non-resident head of the university. In such institutions, the chief executive of a university is the vice-chancellor, who may carry an additional title such as president (e.g. "president & vice-chancellor"). The chancellor may serve as chairperson of the governing body; if not, this duty is often held by a chairperson who may be known as a pro-chancellor.
In many countries, the administrative and educational head of the university is known as the president, principal or rector. In the United States, the head of a university is most commonly a university president. In U.S., university systems that have more than one affiliated university or campus, the executive head of a specific campus may have the title of chancellor and report to the overall system's president, or vice versa.