International GIS Data: Oceania

Bathymetry, topography, boundaries, and coastline, as GRID or shapefile.

Australian open data catalog; filter by KML or shapefile for spatial data.

Mostly geologic themes. The original site has been decommissioned, but provides plenty of links to other working sites that contain the same data.

Metadata catalog.

Geomorphic habitat mapping shapefiles.

Downloadable KMLs on mineral resources.

New Zealand open data catalog.

Land Information New Zealand's data portal, with topographic, transportation, maritime, and property ownership data sets in shapefile, KML, or CAD format.

Catalog of publicly-funded geospatial data.

New Zealand digital elevation base maps, available for a fee.