A 3D icon is a three-dimensional digital representation of an object, concept, or idea that is used in user interfaces, applications, and websites. Unlike traditional flat icons, 3D icons have depth, dimension, and realistic lighting effects that make them appear to pop off the screen.

3D icons are created using 3D modeling software or AI-powered tools that generate three-dimensional graphics. They typically feature:

- Depth and dimension

- Realistic or stylized lighting

- Shadows and highlights

- Perspective and depth cues

- Material properties (like glass, metal, or plastic)

These icons are popular in modern web design and mobile applications because they add visual interest and help create a more engaging user experience.