The present invention provides a LED balloon which comprises a balloon, a filler, a locking device and a LED. Wherein the locking device is on the interior of the balloon, and said filler is on the exterior of the balloon. The locking device comprises two sides which define an internal a cavity within the locking device. The filler is secured within the cavity of the locking device, thereby securing the balloon to the locking device.A LED is connected to the locking device, providing illumination of the balloon from within.