Abstract: A string trimmer lighting system includes a string trimmer having a motor, a handle, an elongated shaft, a debris shield, and a trimmer head; and a lighting device having a light source enclosed within a housing, an elongated member, a clamp, and one or more enclosure fasteners; wherein the housing includes a lens, a power switch, and a power source; wherein the light source emits light through the lens; wherein the elongated member removably attaches the housing to the clamp; wherein the clamp removably receives the elongated shaft; wherein the one or more enclosure fasteners removably tighten the clamp around the elongated shaft.