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, a light-emitting diode strip, 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.