Saguro National Park Boundary Expansion and Study Act of 2006 - Amends the Saguro National Park Establishment Act of 1994 to modify further the boundaries of Saguaro National Park to include specified land.
Allows the Secretary of the Interior, with the consent of the State of Arizona, to acquire from the State land or interests in land within the boundary of the Park
Directs the Secretary to conduct a study to identify: (1) lands adjacent to the Park that are suitable for inclusion within the boundaries of the Park; and (2) lands within the Park boundary that should be removed from such boundary due to development or other changes in their status that make them unsuitable for inclusion within it. Instructs that such study examine the natural, cultural, recreational, and scenic values and characters of lands adjacent to the Park.