Registrar
The person or entity responsible for maintaining records on behalf of the issuer for the purpose of recording the names of the owners of registered bonds.
A Bond whose owner is designated on records maintained for this purpose by a Registrar, often the Paying Agent or Trustee. Transfers of the Bonds occurs only by a transfer on these records. The Principal and Interest on “fully registered” Bonds is paid directly by check (or other fund transfer) to the registered owner.
See Also
The person or entity responsible for maintaining records on behalf of the issuer for the purpose of recording the names of the owners of registered bonds.

The term used in Section 145 of the code to refer to a type of tax-exempt bonds issued as private activity bonds for the benefit of a 501(c)(3) organization.