Abstract: The illuminated dock bumper is formed of a semi-rigid and translucent plastic shell and contains a self-contained, independent electrical lighting system therein. The translucent plastic shell may be white or may be tinted as desired, e.g., red or green for navigational purposes, etc. A solar cell charges a battery during periods of daylight or high illumination, with a photocell closing a circuit to turn on a light source to radiate light through the translucent shell during periods of darkness or low ambient lighting. The system may alternatively be remotely activated and/or may operate intermittently, as desired. The bumper includes a sleeve, which fits over a conventional dock piling or the like, allowing the device to be removably installed over posts, pilings, and similar structures as desired. Different configurations or adapters allow the device to be installed upon different diameters and shapes of dock posts, as required.