Telephone: +47 810 01 300
Monday-Friday: 08.30-15.00 (May 15. – September 14.)
Monday-Friday: 08.30-15.45 (September 15. – May 14.)

Public services: Henrik Ibsens gate 110, 0255 Oslo

Reference , Reading rooms, loans, mikrofilm:
Monday - Friday: 09.00-19.00
Saturday: 09.00-14.00

Inter library loan :
Monday - Friday: 08.00-15.30

Manuscript collections :
Monday - Wednesday and Friday: 09.00-15.30
Thursday: 09.00-19.00

Mediateque (Film and music collection) :
Monday - Wednesday and Friday: 09.00-15.30
Thursday: 09.00-19.00
Saturday: 09.00-14.00

The exhibition is open to the public:
Monday - Friday: 09.00-19.00
Saturday: 09.00-14.00

Visits by appointment:
Photographic collection / Map collection / Norwegian-American collection / Rare books collections / Poster collection / Theatre collections / Ephemera collection

For libraries:
Depotbiblioteket
Monday - Friday: 09.00-15.30

Summer opening hours (June 25. – August 21.):
Guidance, Reading rooms, loans, microfilms:
Monday - Friday: 09.00-18.00
Closed Saturdays 25. June - 21. August

Manuscript collections and music collection:
Monday - Friday: 9.00-15.30
Closed Saturdays 25. June - 21. August

Holiday opening hours:
Christmas Boxing Week: 10.00 - 15.00
Wednesday before Maundy Thursday: kl. 09.00 - 12.00
The National Library is closed: Christmas Eve, New Year's Eve, Easter Eve, May 1., Ascension Day and Pentecost.