Blender is a powerful 3D modeling and rendering software that supports various file formats, including OBJ. OBJ (or .obj) is a common 3D model file format that stores 3D object data, such as vertices, normals, and texture coordinates, making it a popular choice for 3D modeling and rendering applications. In Blender, you can import and export OBJ files to work with 3D models created in other software or to share your own creations with others. To import an OBJ file in Blender, simply go to 'File' > 'Import' and select 'Wavefront (.obj)'. Then, navigate to the location of your OBJ file and click 'Import'. Once imported, you can manipulate and edit the 3D model as needed. Similarly, to export a 3D model as an OBJ file in Blender, select the object you want to export, go to 'File' > 'Export' > 'Wavefront (.obj)', and specify the export settings. With the ability to import and export OBJ files, Blender provides flexibility for 3D artists and designers to collaborate and work with 3D models across different software platforms. Whether you are creating complex 3D scenes or intricate models, understanding how to use OBJ files in Blender can enhance your 3D modeling and rendering workflow.