For CU Boulder students, faculty and staff, your Buff OneCard is your library card. 

If you're not a current CU Boulder faculty, staff, student or affiliate, please see information about library privileges and registration, or contact us at

Loan periods, returns

Borrowing privileges include renewals, item limits, loan periods, renewals, and more, and vary by borrower type. Most items may be returned via library book drops (more about return locations). 

In addition to books and media, we also have technology and other items available to borrow.

Renew or request materials, view account information

Log into My Library Account with your Identikey to view items checked out to you, renew items, or see if you have any holds or fines. Request items online through the library catalog for hold pickup. CU staff, faculty and graduate students with campus mailboxes may request items for delivery there (more information about campus mail delivery).

Policies, fines & fees

Circulation policies, including fines and fees, are also available online. Law Library circulation policies vary from ours. 

Overdue fines and fees may be assessed on some items, equipment, study rooms and recalled/requested materials. All library items are subject to recall and must be returned within a week.  Be sure to check your e-mail for our notices.

Need Help? Contact Us.

Ask A Librarian