A buoyant illuminated board having a board assembly with a deck, a bottom, first and second lateral sides, and at least one aperture. An electrical system has a power source, and at least one light source within the at least one aperture. A hatch assembly has a lid, and a housing that defines a cavity. The electrical system further comprises a controller, an amplifier, and a battery charger connector that are housed within the hatch assembly along with the power source. The at least one aperture may be elongated to define a channel. The at least one light source is a bulb, a light, a lamp, a light-emitting diode, or rope lighting. The board assembly also has an exterior cover that covers the at least one light source within the at least one aperture, and may have a battery charger to recharge the power source.