An appliance and illuminated knob assembly are generally provided herein. The knob assembly may include a surface panel, a control knob, a light source, and a light guide. The surface panel may have a forward face and a rearward face. The control knob may be attached to the surface panel at the forward face. Moreover, the control knob may be rotatable about a central axis. The light source may be disposed behind the surface panel at the rearward face. The light guide may be removably attached to the surface panel about the control knob and include a view ring to receive a portion of light emitted from the light source.