Extendable conveyors with lights are disclosed herein. An example extendable conveyor disclosed herein includes a base unit and a mechanically extendable section, which is adjustably positionable between a nested position within the base unit and an extended position telescoped forwardly from the base unit. The conveyor includes a conveying surface to convey articles extending at least partially on an upper side of the mechanically extendable section. A light source is positioned at a lower side of the mechanically extendable section to illuminate at least an area below the mechanically extendable section.