The Keeper of the Register (more formally known as the Keeper of the National Register of Historic Places) is a National Park Service (NPS) official, responsible for deciding on the eligibility of historic properties for inclusion on the U.S. National Register of Historic Places (NRHP). The first to hold the office was William J. Murtagh, whose term ran from 1967 through 1979. The Keeper's authority may be delegated as they see fit. The State Historic Preservation Officer for each state submits nominations to the Keeper. Upon receipt, the Keeper has 45 days to decide whether to add the property to the NRHP.
The Keeper of the Register role is supported by several regional reviewers, who review submissions for inclusion on the NHRP. This team also is supported by several archaeologists, archivists, and historians.