Models and other *.blend files

Blender models (blenderartists.org post)

This is a repository of (hopefully) realistic plants and trees models made with ngPlant and Blender, for use in your 3D scenes as 3D models or to create alpha textures for billboard-style vegetation.

Official repository for downloads of Blender models, can be user submitted/rated. Includes tutorials section. New version taken over from the old KatorLegaz repository by Akator.

(non blender-specific)
Royalty Free 3D models

"This website showcases 3d models, tutorials, animations, simulations, etc., all using the wonderful little application Blender. This site will continually update with new models, tutorials, etc.. " (from Mini Productions)