David Sean Ferriero (/ˈfɛrioʊ/;[1] born December 31, 1945) is an American librarian and library administrator, who served as the tenth Archivist of the United States.

[15] Ferriero argued that transformation was imperative as NYPL adapted to the profound cultural and societal developments affecting the future of libraries.

[20] During Ferriero's tenure, the library stopped using the unique "Billings classification system" for its reference books in the Rose Reading Room (main reading room) (the classification system is named for John Shaw Billings, the former NYPL librarian who devised and introduced it in the nineteenth century).

[27] Ferriero used the public occasion to express his view that the National Archives was at a "defining moment with regard to our existing electronic records, social media communications, and emerging technologies being used throughout government offices."

He also noted "issues of collection security, the future of the Presidential Library system, backlogs in processing, staff job satisfaction, stakeholder relationships, preservation and storage needs.

[30] President Obama appointed Ferriero to simultaneously head the new National Declassification Center, which had "been given four years to go through 400 million pages of federal documents that remain top secret.

[36][37] As part of his tenure at the National Archives, Ferriero took an active interest in working with Wikipedia, of which he has called himself "a huge fan.

The Washington Post reported that Ferriero "participated in talks regarding the exhibit and supports the decision to edit the photo."

"[41] Subsequently, the National Archives issued an apology for the decision and promised to restore the original image and review its exhibit policies.

Under his leadership, NARA made significant strides in digitizing its vast archival holdings and expanding public access to historical documents.