"3D-Resources.com has a huge amount of free models, textures, tutorials"
3d02 is loaded with 3D models for sale as well as a 3D gallery for inspiration
"3dtotal.com offers textures, tutorials, and sells 3D models they also have a job database "
"3DValley is great resource for 3D modeling they have free tutorials, 3D models and Textures as well as interviews with industry professionals"
CGTrader offers low and high-poly models for film production, VR and game development. Many are free.
Creative-3D.net has over 100 free 3D models for download and tutorials worth checking out
DAZ Productions 3D
Looking for tutorials and some great free 3D models? DAZ 3D has you covered
"Falling Pixel sells 3D models, Textures and Tutorials plus they have a service called 3D request if you can't find it they will build it"
"Flat Pyramid sells Textures, 3D models as well Tutorials "
Google 3D Warehouse
Google has a free resource with some great models it's definitely worth a peak
TurboSquid has one of the largest library of 3D products for sale in the world