Ang Blender ay isang libre at open-source na 3D computer graphics software toolset na ginagamit para sa paglikha ng mga animated na pelikula, visual effect, sining, 3D printed na mga modelo, motion graphics, interactive na 3D application, virtual reality at mga laro sa computer. Kasama sa mga feature ng Blender ang 3D modeling, UV unwrapping, texturing, raster graphics editing, rigging at skinning, fluid at smoke simulation, particle simulation, soft body simulation, sculpting, animating, match moving, rendering, motion graphics, video editing, at compositing.