Z3D is the file extension that is associated with a program called ZModeler. Z3D are files used to store 3D models made in the program. They contain all the information that allows you to correctly visualize the model, including effects, shading or lighting. The most common use of Z3D files is the storage of vehicle models used in video games, including in some titles from the Grand Theft Auto or Need For Speed series.

ZModeler is a tool developed by the Zanoza Software Developing Team.