registrar

Short definition from Wiktionary

Noun

1. 1
   An official keeper or recorder of records: An officer in a university who keeps enrollment and academic achievement records.
2. 2
   An official keeper or recorder of records: The person responsible for record-keeping related to a museum's or archive's collection.
3. 3
   An official keeper or recorder of records: The chief executive officer of a judicial forum, in charge of the entire registry of the department.
4. 4
   A doctor receiving advanced specialist training in some countries in order to become a consultant.
5. 5
   A service that manages the reservation of domain names.