To fix invisible 3D models in Unity, check renderer/material settings, camera compatibility, and import/scale issues.
- Ensure the model’s renderer (Mesh Renderer/Skinned Mesh Renderer) is enabled and has a valid material—disabled renderers or missing materials are common causes. - Verify the model’s layer is in the camera’s culling mask (so the camera can “see” it) and the material’s shader matches your project’s render pipeline (e.g., URP vs. Built-in). - If issues persist, reimport the model (right-click > Reimport) or adjust its scale if it’s too small/large for the camera’s view.