Administrator may refer to—

• Administrators of the Government in various Commonwealth Realms and territories.
• Directors of a government or quasi-governmental agency.
• In the executive branch of the federal government of the United States of America, the highest executive officer of an independent agency whose name ends with the word "Administration."
• In computing, system administrators or sysops.
• In the context of an estate, the person responsible for distributing the decedent's property to heirs; see also executor.
• For the specific role of Administrators in Wikipedia, see this article.