National Women's History Museum Act of 2005 - Requires the Administrator of General Services to enter into an occupancy agreement to make the Pavilion Annex (the building and specified immediate surroundings, including any land unoccupied as of the enactment of this Act) in Washington, D.C. available to the National Women's History Museum, Inc. (Museum Sponsor) for a National Women's History Museum, for at least 99 years or any lesser term agreed to by the Museum Sponsor.
Prohibits use of any federal funds to establish, construct or operate the Museum.