Widener Library

Harvard's flagship library, Widener's collections span a multitude of subjects in over 450 languages. We're open to the Harvard community and offer tours for HUID holders and their guests on Thursday afternoons.
Today: 9am - 7pm
Widener Stacks 9am - 6:45pm
Widener Reference 9am - 6pm
Privileges Office 9am - 5pm


Quiet study areas Quiet study areas
Conversation areas Conversation areas
Food and drink allowed Food and drink allowed
Couches / arm chairs Couches / arm chairs
Private desks Private desks
Standing desks Standing desks
Tech loan Tech loan
Printers / scanners / copiers Printers / scanners / copiers
Charging stations Charging stations


Harvard Yard
Cambridge, MA 02138
Connect with Widener Library


  • Renovation notice: From January 8th to the 12th, 2020, the Widener Library Loker Reading Room will be closed for space-wide renovations. Reference materials will be inaccessible during this time.
  • Widener Library is open to all Harvard ID holders. Harvard ID holders may bring up to four guests. Guests must show some form of ID.
  • Visiting scholars can apply for access via the Privileges Office.
  • The Mass. Ave. entrance, located at the back of the building, is wheelchair/mobility device accessible. Elevators go to all levels of the building and most bathrooms are accessible.
  • Widener Library is home to Harvard Library's Privileges Office. Find contact information for the office.

Using the Library

What's Happening



The Harry Elkins Widener Memorial Library is Harvard University's flagship library.

Built with a gift from Eleanor Elkins Widener, the library is a memorial to her son, Harry, Class of 1907. Harry was an enthusiastic young bibliophile who perished aboard the Titanic.

It had been Harry's plan to donate his personal collection to the University once it provided a suitable alternative to the outdated and inadequate library then located in Gore Hall. Mrs. Widener fulfilled her son's dream by building a facility of monumental proportions, with over 50 miles of shelves and the capacity to hold over three million volumes.

The library opened in 1915, but Harvard's collections continued to grow at an astounding rate. By the late 1930s, Widener's shelves were at capacity. Space was at a premium for staff and patrons as well as books, which led the administration to begin a lengthy decentralization process.

Over time Harvard built several new libraries to house its increasingly specialized collections. By redistributing books to new libraries, space opened up in Widener, but it was gradually given over to the growing staff hired to attend to the collections.

In addition to the physical challenges associated with housing and maintaining an ever growing collection, the 20th century also saw technological advancements that affected Widener--from electrical wiring to a computerized card catalog to sophisticated research workstations.

Widener Library ushered in the new millennium in the midst of its greatest change since opening in 1915. From 1999 to 2004, the building underwent extensive renovations to ensure the long-term preservation and security of collections, and to increase user space.

For more in-depth information about Widener's history, see: